diff options
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/a2mp.c | 6 | ||||
| -rw-r--r-- | net/bluetooth/af_bluetooth.c | 49 | ||||
| -rw-r--r-- | net/bluetooth/bnep/netdev.c | 2 | ||||
| -rw-r--r-- | net/bluetooth/bnep/sock.c | 6 | ||||
| -rw-r--r-- | net/bluetooth/cmtp/capi.c | 2 | ||||
| -rw-r--r-- | net/bluetooth/cmtp/sock.c | 6 | ||||
| -rw-r--r-- | net/bluetooth/hci_conn.c | 42 | ||||
| -rw-r--r-- | net/bluetooth/hci_core.c | 901 | ||||
| -rw-r--r-- | net/bluetooth/hci_event.c | 781 | ||||
| -rw-r--r-- | net/bluetooth/hci_sock.c | 11 | ||||
| -rw-r--r-- | net/bluetooth/hci_sysfs.c | 21 | ||||
| -rw-r--r-- | net/bluetooth/hidp/core.c | 994 | ||||
| -rw-r--r-- | net/bluetooth/hidp/hidp.h | 67 | ||||
| -rw-r--r-- | net/bluetooth/hidp/sock.c | 28 | ||||
| -rw-r--r-- | net/bluetooth/l2cap_core.c | 134 | ||||
| -rw-r--r-- | net/bluetooth/l2cap_sock.c | 12 | ||||
| -rw-r--r-- | net/bluetooth/mgmt.c | 703 | ||||
| -rw-r--r-- | net/bluetooth/rfcomm/core.c | 167 | ||||
| -rw-r--r-- | net/bluetooth/rfcomm/sock.c | 6 | ||||
| -rw-r--r-- | net/bluetooth/sco.c | 56 | ||||
| -rw-r--r-- | net/bluetooth/smp.c | 2 |
21 files changed, 2361 insertions, 1635 deletions
diff --git a/net/bluetooth/a2mp.c b/net/bluetooth/a2mp.c index eb0f4b16ff09..17f33a62f6db 100644 --- a/net/bluetooth/a2mp.c +++ b/net/bluetooth/a2mp.c @@ -397,13 +397,12 @@ static int a2mp_getampassoc_rsp(struct amp_mgr *mgr, struct sk_buff *skb, if (ctrl) { u8 *assoc; - assoc = kzalloc(assoc_len, GFP_KERNEL); + assoc = kmemdup(rsp->amp_assoc, assoc_len, GFP_KERNEL); if (!assoc) { amp_ctrl_put(ctrl); return -ENOMEM; } - memcpy(assoc, rsp->amp_assoc, assoc_len); ctrl->assoc = assoc; ctrl->assoc_len = assoc_len; ctrl->assoc_rem_len = assoc_len; @@ -472,13 +471,12 @@ static int a2mp_createphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb, size_t assoc_len = le16_to_cpu(hdr->len) - sizeof(*req); u8 *assoc; - assoc = kzalloc(assoc_len, GFP_KERNEL); + assoc = kmemdup(req->amp_assoc, assoc_len, GFP_KERNEL); if (!assoc) { amp_ctrl_put(ctrl); return -ENOMEM; } - memcpy(assoc, req->amp_assoc, assoc_len); ctrl->assoc = assoc; ctrl->assoc_len = assoc_len; ctrl->assoc_rem_len = assoc_len; diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c index d3ee69b35a78..9096137c889c 100644 --- a/net/bluetooth/af_bluetooth.c +++ b/net/bluetooth/af_bluetooth.c @@ -92,23 +92,14 @@ int bt_sock_register(int proto, const struct net_proto_family *ops) } EXPORT_SYMBOL(bt_sock_register); -int bt_sock_unregister(int proto) +void bt_sock_unregister(int proto) { - int err = 0; - if (proto < 0 || proto >= BT_MAX_PROTO) - return -EINVAL; + return; write_lock(&bt_proto_lock); - - if (!bt_proto[proto]) - err = -ENOENT; - else - bt_proto[proto] = NULL; - + bt_proto[proto] = NULL; write_unlock(&bt_proto_lock); - - return err; } EXPORT_SYMBOL(bt_sock_unregister); @@ -230,6 +221,8 @@ int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, if (flags & (MSG_OOB)) return -EOPNOTSUPP; + msg->msg_namelen = 0; + skb = skb_recv_datagram(sk, flags, noblock, &err); if (!skb) { if (sk->sk_shutdown & RCV_SHUTDOWN) @@ -237,8 +230,6 @@ int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, return err; } - msg->msg_namelen = 0; - copied = skb->len; if (len < copied) { msg->msg_flags |= MSG_TRUNC; @@ -422,7 +413,8 @@ unsigned int bt_sock_poll(struct file *file, struct socket *sock, return bt_accept_poll(sk); if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue)) - mask |= POLLERR; + mask |= POLLERR | + (sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? POLLPRI : 0); if (sk->sk_shutdown & RCV_SHUTDOWN) mask |= POLLRDHUP | POLLIN | POLLRDNORM; @@ -617,7 +609,7 @@ static int bt_seq_open(struct inode *inode, struct file *file) struct bt_sock_list *sk_list; struct bt_seq_state *s; - sk_list = PDE(inode)->data; + sk_list = PDE_DATA(inode); s = __seq_open_private(file, &bt_seq_ops, sizeof(struct bt_seq_state)); if (!s) @@ -627,26 +619,21 @@ static int bt_seq_open(struct inode *inode, struct file *file) return 0; } -int bt_procfs_init(struct module* module, struct net *net, const char *name, +static const struct file_operations bt_fops = { + .open = bt_seq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_private +}; + +int bt_procfs_init(struct net *net, const char *name, struct bt_sock_list* sk_list, int (* seq_show)(struct seq_file *, void *)) { - struct proc_dir_entry * pde; - sk_list->custom_seq_show = seq_show; - sk_list->fops.owner = module; - sk_list->fops.open = bt_seq_open; - sk_list->fops.read = seq_read; - sk_list->fops.llseek = seq_lseek; - sk_list->fops.release = seq_release_private; - - pde = proc_create(name, 0, net->proc_net, &sk_list->fops); - if (!pde) + if (!proc_create_data(name, 0, net->proc_net, &bt_fops, sk_list)) return -ENOMEM; - - pde->data = sk_list; - return 0; } @@ -655,7 +642,7 @@ void bt_procfs_cleanup(struct net *net, const char *name) remove_proc_entry(name, net->proc_net); } #else -int bt_procfs_init(struct module* module, struct net *net, const char *name, +int bt_procfs_init(struct net *net, const char *name, struct bt_sock_list* sk_list, int (* seq_show)(struct seq_file *, void *)) { diff --git a/net/bluetooth/bnep/netdev.c b/net/bluetooth/bnep/netdev.c index e58c8b32589c..4b488ec26105 100644 --- a/net/bluetooth/bnep/netdev.c +++ b/net/bluetooth/bnep/netdev.c @@ -136,7 +136,7 @@ static u16 bnep_net_eth_proto(struct sk_buff *skb) struct ethhdr *eh = (void *) skb->data; u16 proto = ntohs(eh->h_proto); - if (proto >= 1536) + if (proto >= ETH_P_802_3_MIN) return proto; if (get_unaligned((__be16 *) skb->data) == htons(0xFFFF)) diff --git a/net/bluetooth/bnep/sock.c b/net/bluetooth/bnep/sock.c index e7154a58465f..5f051290daba 100644 --- a/net/bluetooth/bnep/sock.c +++ b/net/bluetooth/bnep/sock.c @@ -234,7 +234,7 @@ int __init bnep_sock_init(void) goto error; } - err = bt_procfs_init(THIS_MODULE, &init_net, "bnep", &bnep_sk_list, NULL); + err = bt_procfs_init(&init_net, "bnep", &bnep_sk_list, NULL); if (err < 0) { BT_ERR("Failed to create BNEP proc file"); bt_sock_unregister(BTPROTO_BNEP); @@ -253,8 +253,6 @@ error: void __exit bnep_sock_cleanup(void) { bt_procfs_cleanup(&init_net, "bnep"); - if (bt_sock_unregister(BTPROTO_BNEP) < 0) - BT_ERR("Can't unregister BNEP socket"); - + bt_sock_unregister(BTPROTO_BNEP); proto_unregister(&bnep_proto); } diff --git a/net/bluetooth/cmtp/capi.c b/net/bluetooth/cmtp/capi.c index a4a9d4b6816c..cd75e4d64b90 100644 --- a/net/bluetooth/cmtp/capi.c +++ b/net/bluetooth/cmtp/capi.c @@ -539,7 +539,7 @@ static int cmtp_proc_show(struct seq_file *m, void *v) static int cmtp_proc_open(struct inode *inode, struct file *file) { - return single_open(file, cmtp_proc_show, PDE(inode)->data); + return single_open(file, cmtp_proc_show, PDE_DATA(inode)); } static const struct file_operations cmtp_proc_fops = { diff --git a/net/bluetooth/cmtp/sock.c b/net/bluetooth/cmtp/sock.c index 1c57482112b6..d82787d417bd 100644 --- a/net/bluetooth/cmtp/sock.c +++ b/net/bluetooth/cmtp/sock.c @@ -245,7 +245,7 @@ int cmtp_init_sockets(void) goto error; } - err = bt_procfs_init(THIS_MODULE, &init_net, "cmtp", &cmtp_sk_list, NULL); + err = bt_procfs_init(&init_net, "cmtp", &cmtp_sk_list, NULL); if (err < 0) { BT_ERR("Failed to create CMTP proc file"); bt_sock_unregister(BTPROTO_HIDP); @@ -264,8 +264,6 @@ error: void cmtp_cleanup_sockets(void) { bt_procfs_cleanup(&init_net, "cmtp"); - if (bt_sock_unregister(BTPROTO_CMTP) < 0) - BT_ERR("Can't unregister CMTP socket"); - + bt_sock_unregister(BTPROTO_CMTP); proto_unregister(&cmtp_proto); } diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index 4925a02ae7e4..6c7f36379722 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -117,7 +117,17 @@ static void hci_acl_create_connection_cancel(struct hci_conn *conn) hci_send_cmd(conn->hdev, HCI_OP_CREATE_CONN_CANCEL, sizeof(cp), &cp); } -void hci_acl_disconn(struct hci_conn *conn, __u8 reason) +static void hci_reject_sco(struct hci_conn *conn) +{ + struct hci_cp_reject_sync_conn_req cp; + + cp.reason = HCI_ERROR_REMOTE_USER_TERM; + bacpy(&cp.bdaddr, &conn->dst); + + hci_send_cmd(conn->hdev, HCI_OP_REJECT_SYNC_CONN_REQ, sizeof(cp), &cp); +} + +void hci_disconnect(struct hci_conn *conn, __u8 reason) { struct hci_cp_disconnect cp; @@ -253,7 +263,7 @@ static void hci_conn_disconnect(struct hci_conn *conn) hci_amp_disconn(conn, reason); break; default: - hci_acl_disconn(conn, reason); + hci_disconnect(conn, reason); break; } } @@ -276,6 +286,8 @@ static void hci_conn_timeout(struct work_struct *work) hci_acl_create_connection_cancel(conn); else if (conn->type == LE_LINK) hci_le_create_connection_cancel(conn); + } else if (conn->type == SCO_LINK || conn->type == ESCO_LINK) { + hci_reject_sco(conn); } break; case BT_CONFIG: @@ -398,8 +410,6 @@ struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst) if (hdev->notify) hdev->notify(hdev, HCI_NOTIFY_CONN_ADD); - atomic_set(&conn->devref, 0); - hci_conn_init_sysfs(conn); return conn; @@ -433,7 +443,7 @@ int hci_conn_del(struct hci_conn *conn) struct hci_conn *acl = conn->link; if (acl) { acl->link = NULL; - hci_conn_put(acl); + hci_conn_drop(acl); } } @@ -448,12 +458,11 @@ int hci_conn_del(struct hci_conn *conn) skb_queue_purge(&conn->data_q); - hci_conn_put_device(conn); + hci_conn_del_sysfs(conn); hci_dev_put(hdev); - if (conn->handle == 0) - kfree(conn); + hci_conn_put(conn); return 0; } @@ -565,7 +574,7 @@ static struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, if (!sco) { sco = hci_conn_add(hdev, type, dst); if (!sco) { - hci_conn_put(acl); + hci_conn_drop(acl); return ERR_PTR(-ENOMEM); } } @@ -835,19 +844,6 @@ void hci_conn_check_pending(struct hci_dev *hdev) hci_dev_unlock(hdev); } -void hci_conn_hold_device(struct hci_conn *conn) -{ - atomic_inc(&conn->devref); -} -EXPORT_SYMBOL(hci_conn_hold_device); - -void hci_conn_put_device(struct hci_conn *conn) -{ - if (atomic_dec_and_test(&conn->devref)) - hci_conn_del_sysfs(conn); -} -EXPORT_SYMBOL(hci_conn_put_device); - int hci_get_conn_list(void __user *arg) { struct hci_conn *c; @@ -980,7 +976,7 @@ void hci_chan_del(struct hci_chan *chan) synchronize_rcu(); - hci_conn_put(conn); + hci_conn_drop(conn); skb_queue_purge(&chan->data_q); kfree(chan); diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 60793e7b768b..33843c5c4939 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -57,36 +57,9 @@ static void hci_notify(struct hci_dev *hdev, int event) /* ---- HCI requests ---- */ -void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result) +static void hci_req_sync_complete(struct hci_dev *hdev, u8 result) { - BT_DBG("%s command 0x%4.4x result 0x%2.2x", hdev->name, cmd, result); - - /* If this is the init phase check if the completed command matches - * the last init command, and if not just return. - */ - if (test_bit(HCI_INIT, &hdev->flags) && hdev->init_last_cmd != cmd) { - struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; - u16 opcode = __le16_to_cpu(sent->opcode); - struct sk_buff *skb; - - /* Some CSR based controllers generate a spontaneous - * reset complete event during init and any pending - * command will never be completed. In such a case we - * need to resend whatever was the last sent - * command. - */ - - if (cmd != HCI_OP_RESET || opcode == HCI_OP_RESET) - return; - - skb = skb_clone(hdev->sent_cmd, GFP_ATOMIC); - if (skb) { - skb_queue_head(&hdev->cmd_q, skb); - queue_work(hdev->workqueue, &hdev->cmd_work); - } - - return; - } + BT_DBG("%s result 0x%2.2x", hdev->name, result); if (hdev->req_status == HCI_REQ_PEND) { hdev->req_result = result; @@ -106,22 +79,158 @@ static void hci_req_cancel(struct hci_dev *hdev, int err) } } +static struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, + u8 event) +{ + struct hci_ev_cmd_complete *ev; + struct hci_event_hdr *hdr; + struct sk_buff *skb; + + hci_dev_lock(hdev); + + skb = hdev->recv_evt; + hdev->recv_evt = NULL; + + hci_dev_unlock(hdev); + + if (!skb) + return ERR_PTR(-ENODATA); + + if (skb->len < sizeof(*hdr)) { + BT_ERR("Too short HCI event"); + goto failed; + } + + hdr = (void *) skb->data; + skb_pull(skb, HCI_EVENT_HDR_SIZE); + + if (event) { + if (hdr->evt != event) + goto failed; + return skb; + } + + if (hdr->evt != HCI_EV_CMD_COMPLETE) { + BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt); + goto failed; + } + + if (skb->len < sizeof(*ev)) { + BT_ERR("Too short cmd_complete event"); + goto failed; + } + + ev = (void *) skb->data; + skb_pull(skb, sizeof(*ev)); + + if (opcode == __le16_to_cpu(ev->opcode)) + return skb; + + BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, + __le16_to_cpu(ev->opcode)); + +failed: + kfree_skb(skb); + return ERR_PTR(-ENODATA); +} + +struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, + const void *param, u8 event, u32 timeout) +{ + DECLARE_WAITQUEUE(wait, current); + struct hci_request req; + int err = 0; + + BT_DBG("%s", hdev->name); + + hci_req_init(&req, hdev); + + hci_req_add_ev(&req, opcode, plen, param, event); + + hdev->req_status = HCI_REQ_PEND; + + err = hci_req_run(&req, hci_req_sync_complete); + if (err < 0) + return ERR_PTR(err); + + add_wait_queue(&hdev->req_wait_q, &wait); + set_current_state(TASK_INTERRUPTIBLE); + + schedule_timeout(timeout); + + remove_wait_queue(&hdev->req_wait_q, &wait); + + if (signal_pending(current)) + return ERR_PTR(-EINTR); + + switch (hdev->req_status) { + case HCI_REQ_DONE: + err = -bt_to_errno(hdev->req_result); + break; + + case HCI_REQ_CANCELED: + err = -hdev->req_result; + break; + + default: + err = -ETIMEDOUT; + break; + } + + hdev->req_status = hdev->req_result = 0; + + BT_DBG("%s end: err %d", hdev->name, err); + + if (err < 0) + return ERR_PTR(err); + + return hci_get_cmd_complete(hdev, opcode, event); +} +EXPORT_SYMBOL(__hci_cmd_sync_ev); + +struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, + const void *param, u32 timeout) +{ + return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); +} +EXPORT_SYMBOL(__hci_cmd_sync); + /* Execute request and wait for completion. */ -static int __hci_request(struct hci_dev *hdev, - void (*req)(struct hci_dev *hdev, unsigned long opt), - unsigned long opt, __u32 timeout) +static int __hci_req_sync(struct hci_dev *hdev, + void (*func)(struct hci_request *req, + unsigned long opt), + unsigned long opt, __u32 timeout) { + struct hci_request req; DECLARE_WAITQUEUE(wait, current); int err = 0; BT_DBG("%s start", hdev->name); + hci_req_init(&req, hdev); + hdev->req_status = HCI_REQ_PEND; + func(&req, opt); + + err = hci_req_run(&req, hci_req_sync_complete); + if (err < 0) { + hdev->req_status = 0; + + /* ENODATA means the HCI request command queue is empty. + * This can happen when a request with conditionals doesn't + * trigger any commands to be sent. This is normal behavior + * and should not trigger an error return. + */ + if (err == -ENODATA) + return 0; + + return err; + } + add_wait_queue(&hdev->req_wait_q, &wait); set_current_state(TASK_INTERRUPTIBLE); - req(hdev, opt); schedule_timeout(timeout); remove_wait_queue(&hdev->req_wait_q, &wait); @@ -150,9 +259,10 @@ static int __hci_request(struct hci_dev *hdev, return err; } -static int hci_request(struct hci_dev *hdev, - void (*req)(struct hci_dev *hdev, unsigned long opt), - unsigned long opt, __u32 timeout) +static int hci_req_sync(struct hci_dev *hdev, + void (*req)(struct hci_request *req, + unsigned long opt), + unsigned long opt, __u32 timeout) { int ret; @@ -161,75 +271,66 @@ static int hci_request(struct hci_dev *hdev, /* Serialize all requests */ hci_req_lock(hdev); - ret = __hci_request(hdev, req, opt, timeout); + ret = __hci_req_sync(hdev, req, opt, timeout); hci_req_unlock(hdev); return ret; } -static void hci_reset_req(struct hci_dev *hdev, unsigned long opt) +static void hci_reset_req(struct hci_request *req, unsigned long opt) { - BT_DBG("%s %ld", hdev->name, opt); + BT_DBG("%s %ld", req->hdev->name, opt); /* Reset device */ - set_bit(HCI_RESET, &hdev->flags); - hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL); + set_bit(HCI_RESET, &req->hdev->flags); + hci_req_add(req, HCI_OP_RESET, 0, NULL); } -static void bredr_init(struct hci_dev *hdev) +static void bredr_init(struct hci_request *req) { - hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; + req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; /* Read Local Supported Features */ - hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); + hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); /* Read Local Version */ - hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); + hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); + + /* Read BD Address */ + hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); } -static void amp_init(struct hci_dev *hdev) +static void amp_init(struct hci_request *req) { - hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; + req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; /* Read Local Version */ - hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL); + hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); /* Read Local AMP Info */ - hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); + hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); /* Read Data Blk size */ - hci_send_cmd(hdev, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); + hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); } -static void hci_init_req(struct hci_dev *hdev, unsigned long opt) +static void hci_init1_req(struct hci_request *req, unsigned long opt) { - struct sk_buff *skb; + struct hci_dev *hdev = req->hdev; BT_DBG("%s %ld", hdev->name, opt); - /* Driver initialization */ - - /* Special commands */ - while ((skb = skb_dequeue(&hdev->driver_init))) { - bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; - skb->dev = (void *) hdev; - - skb_queue_tail(&hdev->cmd_q, skb); - queue_work(hdev->workqueue, &hdev->cmd_work); - } - skb_queue_purge(&hdev->driver_init); - /* Reset */ if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) - hci_reset_req(hdev, 0); + hci_reset_req(req, 0); switch (hdev->dev_type) { case HCI_BREDR: - bredr_init(hdev); + bredr_init(req); break; case HCI_AMP: - amp_init(hdev); + amp_init(req); break; default: @@ -238,44 +339,347 @@ static void hci_init_req(struct hci_dev *hdev, unsigned long opt) } } -static void hci_scan_req(struct hci_dev *hdev, unsigned long opt) +static void bredr_setup(struct hci_request *req) +{ + struct hci_cp_delete_stored_link_key cp; + __le16 param; + __u8 flt_type; + + /* Read Buffer Size (ACL mtu, max pkt, etc.) */ + hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); + + /* Read Class of Device */ + hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); + + /* Read Local Name */ + hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); + + /* Read Voice Setting */ + hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); + + /* Clear Event Filters */ + flt_type = HCI_FLT_CLEAR_ALL; + hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); + + /* Connection accept timeout ~20 secs */ + param = __constant_cpu_to_le16(0x7d00); + hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); + + bacpy(&cp.bdaddr, BDADDR_ANY); + cp.delete_all = 0x01; + hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp); + + /* Read page scan parameters */ + if (req->hdev->hci_ver > BLUETOOTH_VER_1_1) { + hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); + hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); + } +} + +static void le_setup(struct hci_request *req) +{ + struct hci_dev *hdev = req->hdev; + + /* Read LE Buffer Size */ + hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); + + /* Read LE Local Supported Features */ + hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); + + /* Read LE Advertising Channel TX Power */ + hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); + + /* Read LE White List Size */ + hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); + + /* Read LE Supported States */ + hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); + + /* LE-only controllers have LE implicitly enabled */ + if (!lmp_bredr_capable(hdev)) + set_bit(HCI_LE_ENABLED, &hdev->dev_flags); +} + +static u8 hci_get_inquiry_mode(struct hci_dev *hdev) +{ + if (lmp_ext_inq_capable(hdev)) + return 0x02; + + if (lmp_inq_rssi_capable(hdev)) + return 0x01; + + if (hdev->manufacturer == 11 && hdev->hci_rev == 0x00 && + hdev->lmp_subver == 0x0757) + return 0x01; + + if (hdev->manufacturer == 15) { + if (hdev->hci_rev == 0x03 && hdev->lmp_subver == 0x6963) + return 0x01; + if (hdev->hci_rev == 0x09 && hdev->lmp_subver == 0x6963) + return 0x01; + if (hdev->hci_rev == 0x00 && hdev->lmp_subver == 0x6965) + return 0x01; + } + + if (hdev->manufacturer == 31 && hdev->hci_rev == 0x2005 && + hdev->lmp_subver == 0x1805) + return 0x01; + + return 0x00; +} + +static void hci_setup_inquiry_mode(struct hci_request *req) +{ + u8 mode; + + mode = hci_get_inquiry_mode(req->hdev); + + hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); +} + +static void hci_setup_event_mask(struct hci_request *req) +{ + struct hci_dev *hdev = req->hdev; + + /* The second byte is 0xff instead of 0x9f (two reserved bits + * disabled) since a Broadcom 1.2 dongle doesn't respond to the + * command otherwise. + */ + u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; + + /* CSR 1.1 dongles does not accept any bitfield so don't try to set + * any event mask for pre 1.2 devices. + */ + if (hdev->hci_ver < BLUETOOTH_VER_1_2) + return; + + if (lmp_bredr_capable(hdev)) { + events[4] |= 0x01; /* Flow Specification Complete */ + events[4] |= 0x02; /* Inquiry Result with RSSI */ + events[4] |= 0x04; /* Read Remote Extended Features Complete */ + events[5] |= 0x08; /* Synchronous Connection Complete */ + events[5] |= 0x10; /* Synchronous Connection Changed */ + } + + if (lmp_inq_rssi_capable(hdev)) + events[4] |= 0x02; /* Inquiry Result with RSSI */ + + if (lmp_sniffsubr_capable(hdev)) + events[5] |= 0x20; /* Sniff Subrating */ + + if (lmp_pause_enc_capable(hdev)) + events[5] |= 0x80; /* Encryption Key Refresh Complete */ + + if (lmp_ext_inq_capable(hdev)) + events[5] |= 0x40; /* Extended Inquiry Result */ + + if (lmp_no_flush_capable(hdev)) + events[7] |= 0x01; /* Enhanced Flush Complete */ + + if (lmp_lsto_capable(hdev)) + events[6] |= 0x80; /* Link Supervision Timeout Changed */ + + if (lmp_ssp_capable(hdev)) { + events[6] |= 0x01; /* IO Capability Request */ + events[6] |= 0x02; /* IO Capability Response */ + events[6] |= 0x04; /* User Confirmation Request */ + events[6] |= 0x08; /* User Passkey Request */ + events[6] |= 0x10; /* Remote OOB Data Request */ + events[6] |= 0x20; /* Simple Pairing Complete */ + events[7] |= 0x04; /* User Passkey Notification */ + events[7] |= 0x08; /* Keypress Notification */ + events[7] |= 0x10; /* Remote Host Supported + * Features Notification + */ + } + + if (lmp_le_capable(hdev)) + events[7] |= 0x20; /* LE Meta-Event */ + + hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); + + if (lmp_le_capable(hdev)) { + memset(events, 0, sizeof(events)); + events[0] = 0x1f; + hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, + sizeof(events), events); + } +} + +static void hci_init2_req(struct hci_request *req, unsigned long opt) +{ + struct hci_dev *hdev = req->hdev; + + if (lmp_bredr_capable(hdev)) + bredr_setup(req); + + if (lmp_le_capable(hdev)) + le_setup(req); + + hci_setup_event_mask(req); + + if (hdev->hci_ver > BLUETOOTH_VER_1_1) + hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); + + if (lmp_ssp_capable(hdev)) { + if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) { + u8 mode = 0x01; + hci_req_add(req, HCI_OP_WRITE_SSP_MODE, + sizeof(mode), &mode); + } else { + struct hci_cp_write_eir cp; + + memset(hdev->eir, 0, sizeof(hdev->eir)); + memset(&cp, 0, sizeof(cp)); + + hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); + } + } + + if (lmp_inq_rssi_capable(hdev)) + hci_setup_inquiry_mode(req); + + if (lmp_inq_tx_pwr_capable(hdev)) + hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); + + if (lmp_ext_feat_capable(hdev)) { + struct hci_cp_read_local_ext_features cp; + + cp.page = 0x01; + hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, + sizeof(cp), &cp); + } + + if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) { + u8 enable = 1; + hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), + &enable); + } +} + +static void hci_setup_link_policy(struct hci_request *req) +{ + struct hci_dev *hdev = req->hdev; + struct hci_cp_write_def_link_policy cp; + u16 link_policy = 0; + + if (lmp_rswitch_capable(hdev)) + link_policy |= HCI_LP_RSWITCH; + if (lmp_hold_capable(hdev)) + link_policy |= HCI_LP_HOLD; + if (lmp_sniff_capable(hdev)) + link_policy |= HCI_LP_SNIFF; + if (lmp_park_capable(hdev)) + link_policy |= HCI_LP_PARK; + + cp.policy = cpu_to_le16(link_policy); + hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); +} + +static void hci_set_le_support(struct hci_request *req) +{ + struct hci_dev *hdev = req->hdev; + struct hci_cp_write_le_host_supported cp; + + /* LE-only devices do not support explicit enablement */ + if (!lmp_bredr_capable(hdev)) + return; + + memset(&cp, 0, sizeof(cp)); + + if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { + cp.le = 0x01; + cp.simul = lmp_le_br_capable(hdev); + } + + if (cp.le != lmp_host_le_capable(hdev)) + hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), + &cp); +} + +static void hci_init3_req(struct hci_request *req, unsigned long opt) +{ + struct hci_dev *hdev = req->hdev; + u8 p; + + if (hdev->commands[5] & 0x10) + hci_setup_link_policy(req); + + if (lmp_le_capable(hdev)) { + hci_set_le_support(req); + hci_update_ad(req); + } + + /* Read features beyond page 1 if available */ + for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { + struct hci_cp_read_local_ext_features cp; + + cp.page = p; + hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, + sizeof(cp), &cp); + } +} + +static int __hci_init(struct hci_dev *hdev) +{ + int err; + + err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); + if (err < 0) + return err; + + /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode + * BR/EDR/LE type controllers. AMP controllers only need the + * first stage init. + */ + if (hdev->dev_type != HCI_BREDR) + return 0; + + err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); + if (err < 0) + return err; + + return __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); +} + +static void hci_scan_req(struct hci_request *req, unsigned long opt) { __u8 scan = opt; - BT_DBG("%s %x", hdev->name, scan); + BT_DBG("%s %x", req->hdev->name, scan); /* Inquiry and Page scans */ - hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); + hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); } -static void hci_auth_req(struct hci_dev *hdev, unsigned long opt) +static void hci_auth_req(struct hci_request *req, unsigned long opt) { __u8 auth = opt; - BT_DBG("%s %x", hdev->name, auth); + BT_DBG("%s %x", req->hdev->name, auth); /* Authentication */ - hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); + hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); } -static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt) +static void hci_encrypt_req(struct hci_request *req, unsigned long opt) { __u8 encrypt = opt; - BT_DBG("%s %x", hdev->name, encrypt); + BT_DBG("%s %x", req->hdev->name, encrypt); /* Encryption */ - hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); + hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); } -static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt) +static void hci_linkpol_req(struct hci_request *req, unsigned long opt) { __le16 policy = cpu_to_le16(opt); - BT_DBG("%s %x", hdev->name, policy); + BT_DBG("%s %x", req->hdev->name, policy); /* Default link policy */ - hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); + hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); } /* Get HCI device by index. @@ -512,9 +916,10 @@ static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) return copied; } -static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) +static void hci_inq_req(struct hci_request *req, unsigned long opt) { struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; + struct hci_dev *hdev = req->hdev; struct hci_cp_inquiry cp; BT_DBG("%s", hdev->name); @@ -526,7 +931,13 @@ static void hci_inq_req(struct hci_dev *hdev, unsigned long opt) memcpy(&cp.lap, &ir->lap, 3); cp.length = ir->length; cp.num_rsp = ir->num_rsp; - hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp); + hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); +} + +static int wait_inquiry(void *word) +{ + schedule(); + return signal_pending(current); } int hci_inquiry(void __user *arg) @@ -556,9 +967,17 @@ int hci_inquiry(void __user *arg) timeo = ir.length * msecs_to_jiffies(2000); if (do_inquiry) { - err = hci_request(hdev, hci_inq_req, (unsigned long)&ir, timeo); + err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, + timeo); if (err < 0) goto done; + + /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is + * cleared). If it is interrupted by a signal, return -EINTR. + */ + if (wait_on_bit(&hdev->flags, HCI_INQUIRY, wait_inquiry, + TASK_INTERRUPTIBLE)) + return -EINTR; } /* for unlimited number of responses we will use buffer with @@ -654,39 +1073,29 @@ static u8 create_ad(struct hci_dev *hdev, u8 *ptr) return ad_len; } -int hci_update_ad(struct hci_dev *hdev) +void hci_update_ad(struct hci_request *req) { + struct hci_dev *hdev = req->hdev; struct hci_cp_le_set_adv_data cp; u8 len; - int err; - - hci_dev_lock(hdev); - if (!lmp_le_capable(hdev)) { - err = -EINVAL; - goto unlock; - } + if (!lmp_le_capable(hdev)) + return; memset(&cp, 0, sizeof(cp)); len = create_ad(hdev, cp.data); if (hdev->adv_data_len == len && - memcmp(cp.data, hdev->adv_data, len) == 0) { - err = 0; - goto unlock; - } + memcmp(cp.data, hdev->adv_data, len) == 0) + return; memcpy(hdev->adv_data, cp.data, sizeof(cp.data)); hdev->adv_data_len = len; cp.length = len; - err = hci_send_cmd(hdev, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp); -unlock: - hci_dev_unlock(hdev); - - return err; + hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp); } /* ---- HCI ioctl helpers ---- */ @@ -719,34 +1128,37 @@ int hci_dev_open(__u16 dev) goto done; } - if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) - set_bit(HCI_RAW, &hdev->flags); - - /* Treat all non BR/EDR controllers as raw devices if - enable_hs is not set */ - if (hdev->dev_type != HCI_BREDR && !enable_hs) - set_bit(HCI_RAW, &hdev->flags); - if (hdev->open(hdev)) { ret = -EIO; goto done; } - if (!test_bit(HCI_RAW, &hdev->flags)) { - atomic_set(&hdev->cmd_cnt, 1); - set_bit(HCI_INIT, &hdev->flags); - hdev->init_last_cmd = 0; + atomic_set(&hdev->cmd_cnt, 1); + set_bit(HCI_INIT, &hdev->flags); - ret = __hci_request(hdev, hci_init_req, 0, HCI_INIT_TIMEOUT); + if (hdev->setup && test_bit(HCI_SETUP, &hdev->dev_flags)) + ret = hdev->setup(hdev); - clear_bit(HCI_INIT, &hdev->flags); + if (!ret) { + /* Treat all non BR/EDR controllers as raw devices if + * enable_hs is not set. + */ + if (hdev->dev_type != HCI_BREDR && !enable_hs) + set_bit(HCI_RAW, &hdev->flags); + + if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) + set_bit(HCI_RAW, &hdev->flags); + + if (!test_bit(HCI_RAW, &hdev->flags)) + ret = __hci_init(hdev); } + clear_bit(HCI_INIT, &hdev->flags); + if (!ret) { hci_dev_hold(hdev); set_bit(HCI_UP, &hdev->flags); hci_notify(hdev, HCI_DEV_UP); - hci_update_ad(hdev); if (!test_bit(HCI_SETUP, &hdev->dev_flags) && mgmt_valid_hdev(hdev)) { hci_dev_lock(hdev); @@ -828,7 +1240,7 @@ static int hci_dev_do_close(struct hci_dev *hdev) if (!test_bit(HCI_RAW, &hdev->flags) && test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { set_bit(HCI_INIT, &hdev->flags); - __hci_request(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); + __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); clear_bit(HCI_INIT, &hdev->flags); } @@ -847,10 +1259,17 @@ static int hci_dev_do_close(struct hci_dev *hdev) hdev->sent_cmd = NULL; } + kfree_skb(hdev->recv_evt); + hdev->recv_evt = NULL; + /* After this point our queues are empty * and no tasks are scheduled. */ hdev->close(hdev); + /* Clear flags */ + hdev->flags = 0; + hdev->dev_flags &= ~HCI_PERSISTENT_MASK; + if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags) && mgmt_valid_hdev(hdev)) { hci_dev_lock(hdev); @@ -858,9 +1277,6 @@ static int hci_dev_do_close(struct hci_dev *hdev) hci_dev_unlock(hdev); } - /* Clear flags */ - hdev->flags = 0; - /* Controller radio is available but is currently powered down */ hdev->amp_status = 0; @@ -921,7 +1337,7 @@ int hci_dev_reset(__u16 dev) hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; if (!test_bit(HCI_RAW, &hdev->flags)) - ret = __hci_request(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); + ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); done: hci_req_unlock(hdev); @@ -960,8 +1376,8 @@ int hci_dev_cmd(unsigned int cmd, void __user *arg) switch (cmd) { case HCISETAUTH: - err = hci_request(hdev, hci_auth_req, dr.dev_opt, - HCI_INIT_TIMEOUT); + err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, + HCI_INIT_TIMEOUT); break; case HCISETENCRYPT: @@ -972,24 +1388,24 @@ int hci_dev_cmd(unsigned int cmd, void __user *arg) if (!test_bit(HCI_AUTH, &hdev->flags)) { /* Auth must be enabled first */ - err = hci_request(hdev, hci_auth_req, dr.dev_opt, - HCI_INIT_TIMEOUT); + err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, + HCI_INIT_TIMEOUT); if (err) break; } - err = hci_request(hdev, hci_encrypt_req, dr.dev_opt, - HCI_INIT_TIMEOUT); + err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, + HCI_INIT_TIMEOUT); break; case HCISETSCAN: - err = hci_request(hdev, hci_scan_req, dr.dev_opt, - HCI_INIT_TIMEOUT); + err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, + HCI_INIT_TIMEOUT); break; case HCISETLINKPOL: - err = hci_request(hdev, hci_linkpol_req, dr.dev_opt, - HCI_INIT_TIMEOUT); + err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, + HCI_INIT_TIMEOUT); break; case HCISETLINKMODE: @@ -1566,7 +1982,7 @@ int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) return mgmt_device_unblocked(hdev, bdaddr, type); } -static void le_scan_param_req(struct hci_dev *hdev, unsigned long opt) +static void le_scan_param_req(struct hci_request *req, unsigned long opt) { struct le_scan_params *param = (struct le_scan_params *) opt; struct hci_cp_le_set_scan_param cp; @@ -1576,18 +1992,18 @@ static void le_scan_param_req(struct hci_dev *hdev, unsigned long opt) cp.interval = cpu_to_le16(param->interval); cp.window = cpu_to_le16(param->window); - hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp); + hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp); } -static void le_scan_enable_req(struct hci_dev *hdev, unsigned long opt) +static void le_scan_enable_req(struct hci_request *req, unsigned long opt) { struct hci_cp_le_set_scan_enable cp; memset(&cp, 0, sizeof(cp)); - cp.enable = 1; - cp.filter_dup = 1; + cp.enable = LE_SCAN_ENABLE; + cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; - hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); + hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); } static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval, @@ -1608,10 +2024,10 @@ static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval, hci_req_lock(hdev); - err = __hci_request(hdev, le_scan_param_req, (unsigned long) ¶m, - timeo); + err = __hci_req_sync(hdev, le_scan_param_req, (unsigned long) ¶m, + timeo); if (!err) - err = __hci_request(hdev, le_scan_enable_req, 0, timeo); + err = __hci_req_sync(hdev, le_scan_enable_req, 0, timeo); hci_req_unlock(hdev); @@ -1619,7 +2035,7 @@ static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval, return err; queue_delayed_work(hdev->workqueue, &hdev->le_scan_disable, - msecs_to_jiffies(timeout)); + timeout); return 0; } @@ -1729,7 +2145,6 @@ struct hci_dev *hci_alloc_dev(void) INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); - skb_queue_head_init(&hdev->driver_init); skb_queue_head_init(&hdev->rx_q); skb_queue_head_init(&hdev->cmd_q); skb_queue_head_init(&hdev->raw_q); @@ -1748,8 +2163,6 @@ EXPORT_SYMBOL(hci_alloc_dev); /* Free HCI device */ void hci_free_dev(struct hci_dev *hdev) { - skb_queue_purge(&hdev->driver_init); - /* will free via device release */ put_device(&hdev->dev); } @@ -2160,20 +2573,55 @@ static int hci_send_frame(struct sk_buff *skb) return hdev->send(skb); } -/* Send HCI command */ -int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) +void hci_req_init(struct hci_request *req, struct hci_dev *hdev) +{ + skb_queue_head_init(&req->cmd_q); + req->hdev = hdev; + req->err = 0; +} + +int hci_req_run(struct hci_request *req, hci_req_complete_t complete) +{ + struct hci_dev *hdev = req->hdev; + struct sk_buff *skb; + unsigned long flags; + + BT_DBG("length %u", skb_queue_len(&req->cmd_q)); + + /* If an error occured during request building, remove all HCI + * commands queued on the HCI request queue. + */ + if (req->err) { + skb_queue_purge(&req->cmd_q); + return req->err; + } + + /* Do not allow empty requests */ + if (skb_queue_empty(&req->cmd_q)) + return -ENODATA; + + skb = skb_peek_tail(&req->cmd_q); + bt_cb(skb)->req.complete = complete; + + spin_lock_irqsave(&hdev->cmd_q.lock, flags); + skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q); + spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); + + queue_work(hdev->workqueue, &hdev->cmd_work); + + return 0; +} + +static struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, + u32 plen, const void *param) { int len = HCI_COMMAND_HDR_SIZE + plen; struct hci_command_hdr *hdr; struct sk_buff *skb; - BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); - skb = bt_skb_alloc(len, GFP_ATOMIC); - if (!skb) { - BT_ERR("%s no memory for command", hdev->name); - return -ENOMEM; - } + if (!skb) + return NULL; hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); hdr->opcode = cpu_to_le16(opcode); @@ -2187,8 +2635,27 @@ int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; skb->dev = (void *) hdev; - if (test_bit(HCI_INIT, &hdev->flags)) - hdev->init_last_cmd = opcode; + return skb; +} + +/* Send HCI command */ +int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, + const void *param) +{ + struct sk_buff *skb; + + BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); + + skb = hci_prepare_cmd(hdev, opcode, plen, param); + if (!skb) { + BT_ERR("%s no memory for command", hdev->name); + return -ENOMEM; + } + + /* Stand-alone HCI commands must be flaged as + * single-command requests. + */ + bt_cb(skb)->req.start = true; skb_queue_tail(&hdev->cmd_q, skb); queue_work(hdev->workqueue, &hdev->cmd_work); @@ -2196,6 +2663,43 @@ int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param) return 0; } +/* Queue a command to an asynchronous HCI request */ +void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, + const void *param, u8 event) +{ + struct hci_dev *hdev = req->hdev; + struct sk_buff *skb; + + BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); + + /* If an error occured during request building, there is no point in + * queueing the HCI command. We can simply return. + */ + if (req->err) + return; + + skb = hci_prepare_cmd(hdev, opcode, plen, param); + if (!skb) { + BT_ERR("%s no memory for command (opcode 0x%4.4x)", + hdev->name, opcode); + req->err = -ENOMEM; + return; + } + + if (skb_queue_empty(&req->cmd_q)) + bt_cb(skb)->req.start = true; + + bt_cb(skb)->req.event = event; + + skb_queue_tail(&req->cmd_q, skb); +} + +void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, + const void *param) +{ + hci_req_add_ev(req, opcode, plen, param, 0); +} + /* Get data from the previously sent command */ void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) { @@ -2398,7 +2902,7 @@ static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) if (c->type == type && c->sent) { BT_ERR("%s killing stalled connection %pMR", hdev->name, &c->dst); - hci_acl_disconn(c, HCI_ERROR_REMOTE_USER_TERM); + hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); } } @@ -2860,6 +3364,97 @@ static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) kfree_skb(skb); } +static bool hci_req_is_complete(struct hci_dev *hdev) +{ + struct sk_buff *skb; + + skb = skb_peek(&hdev->cmd_q); + if (!skb) + return true; + + return bt_cb(skb)->req.start; +} + +static void hci_resend_last(struct hci_dev *hdev) +{ + struct hci_command_hdr *sent; + struct sk_buff *skb; + u16 opcode; + + if (!hdev->sent_cmd) + return; + + sent = (void *) hdev->sent_cmd->data; + opcode = __le16_to_cpu(sent->opcode); + if (opcode == HCI_OP_RESET) + return; + + skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); + if (!skb) + return; + + skb_queue_head(&hdev->cmd_q, skb); + queue_work(hdev->workqueue, &hdev->cmd_work); +} + +void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status) +{ + hci_req_complete_t req_complete = NULL; + struct sk_buff *skb; + unsigned long flags; + + BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); + + /* If the completed command doesn't match the last one that was + * sent we need to do special handling of it. + */ + if (!hci_sent_cmd_data(hdev, opcode)) { + /* Some CSR based controllers generate a spontaneous + * reset complete event during init and any pending + * command will never be completed. In such a case we + * need to resend whatever was the last sent + * command. + */ + if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) + hci_resend_last(hdev); + + return; + } + + /* If the command succeeded and there's still more commands in + * this request the request is not yet complete. + */ + if (!status && !hci_req_is_complete(hdev)) + return; + + /* If this was the last command in a request the complete + * callback would be found in hdev->sent_cmd instead of the + * command queue (hdev->cmd_q). + */ + if (hdev->sent_cmd) { + req_complete = bt_cb(hdev->sent_cmd)->req.complete; + if (req_complete) + goto call_complete; + } + + /* Remove all pending commands belonging to this request */ + spin_lock_irqsave(&hdev->cmd_q.lock, flags); + while ((skb = __skb_dequeue(&hdev->cmd_q))) { + if (bt_cb(skb)->req.start) { + __skb_queue_head(&hdev->cmd_q, skb); + break; + } + + req_complete = bt_cb(skb)->req.complete; + kfree_skb(skb); + } + spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); + +call_complete: + if (req_complete) + req_complete(hdev, status); +} + static void hci_rx_work(struct work_struct *work) { struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 477726a63512..b93cd2eb5d58 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -48,13 +48,13 @@ static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb) } clear_bit(HCI_INQUIRY, &hdev->flags); + smp_mb__after_clear_bit(); /* wake_up_bit advises about this barrier */ + wake_up_bit(&hdev->flags, HCI_INQUIRY); hci_dev_lock(hdev); hci_discovery_set_state(hdev, DISCOVERY_STOPPED); hci_dev_unlock(hdev); - hci_req_complete(hdev, HCI_OP_INQUIRY_CANCEL, status); - hci_conn_check_pending(hdev); } @@ -183,8 +183,6 @@ static void hci_cc_write_def_link_policy(struct hci_dev *hdev, if (!status) hdev->link_policy = get_unaligned_le16(sent); - - hci_req_complete(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, status); } static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb) @@ -195,11 +193,8 @@ static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb) clear_bit(HCI_RESET, &hdev->flags); - hci_req_complete(hdev, HCI_OP_RESET, status); - /* Reset all non-persistent flags */ - hdev->dev_flags &= ~(BIT(HCI_LE_SCAN) | BIT(HCI_PENDING_CLASS) | - BIT(HCI_PERIODIC_INQ)); + hdev->dev_flags &= ~HCI_PERSISTENT_MASK; hdev->discovery.state = DISCOVERY_STOPPED; hdev->inq_tx_power = HCI_TX_POWER_INVALID; @@ -228,11 +223,6 @@ static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb) memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH); hci_dev_unlock(hdev); - - if (!status && !test_bit(HCI_INIT, &hdev->flags)) - hci_update_ad(hdev); - - hci_req_complete(hdev, HCI_OP_WRITE_LOCAL_NAME, status); } static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb) @@ -270,8 +260,6 @@ static void hci_cc_write_auth_enable(struct hci_dev *hdev, struct sk_buff *skb) if (test_bit(HCI_MGMT, &hdev->dev_flags)) mgmt_auth_enable_complete(hdev, status); - - hci_req_complete(hdev, HCI_OP_WRITE_AUTH_ENABLE, status); } static void hci_cc_write_encrypt_mode(struct hci_dev *hdev, struct sk_buff *skb) @@ -293,8 +281,6 @@ static void hci_cc_write_encrypt_mode(struct hci_dev *hdev, struct sk_buff *skb) else clear_bit(HCI_ENCRYPT, &hdev->flags); } - - hci_req_complete(hdev, HCI_OP_WRITE_ENCRYPT_MODE, status); } static void hci_cc_write_scan_enable(struct hci_dev *hdev, struct sk_buff *skb) @@ -343,7 +329,6 @@ static void hci_cc_write_scan_enable(struct hci_dev *hdev, struct sk_buff *skb) done: hci_dev_unlock(hdev); - hci_req_complete(hdev, HCI_OP_WRITE_SCAN_ENABLE, status); } static void hci_cc_read_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb) @@ -435,15 +420,6 @@ static void hci_cc_write_voice_setting(struct hci_dev *hdev, hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); } -static void hci_cc_host_buffer_size(struct hci_dev *hdev, struct sk_buff *skb) -{ - __u8 status = *((__u8 *) skb->data); - - BT_DBG("%s status 0x%2.2x", hdev->name, status); - - hci_req_complete(hdev, HCI_OP_HOST_BUFFER_SIZE, status); -} - static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb) { __u8 status = *((__u8 *) skb->data); @@ -457,9 +433,9 @@ static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb) if (!status) { if (sent->mode) - hdev->host_features[0] |= LMP_HOST_SSP; + hdev->features[1][0] |= LMP_HOST_SSP; else - hdev->host_features[0] &= ~LMP_HOST_SSP; + hdev->features[1][0] &= ~LMP_HOST_SSP; } if (test_bit(HCI_MGMT, &hdev->dev_flags)) @@ -472,211 +448,6 @@ static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb) } } -static u8 hci_get_inquiry_mode(struct hci_dev *hdev) -{ - if (lmp_ext_inq_capable(hdev)) - return 2; - - if (lmp_inq_rssi_capable(hdev)) - return 1; - - if (hdev->manufacturer == 11 && hdev->hci_rev == 0x00 && - hdev->lmp_subver == 0x0757) - return 1; - - if (hdev->manufacturer == 15) { - if (hdev->hci_rev == 0x03 && hdev->lmp_subver == 0x6963) - return 1; - if (hdev->hci_rev == 0x09 && hdev->lmp_subver == 0x6963) - return 1; - if (hdev->hci_rev == 0x00 && hdev->lmp_subver == 0x6965) - return 1; - } - - if (hdev->manufacturer == 31 && hdev->hci_rev == 0x2005 && - hdev->lmp_subver == 0x1805) - return 1; - - return 0; -} - -static void hci_setup_inquiry_mode(struct hci_dev *hdev) -{ - u8 mode; - - mode = hci_get_inquiry_mode(hdev); - - hci_send_cmd(hdev, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); -} - -static void hci_setup_event_mask(struct hci_dev *hdev) -{ - /* The second byte is 0xff instead of 0x9f (two reserved bits - * disabled) since a Broadcom 1.2 dongle doesn't respond to the - * command otherwise */ - u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; - - /* CSR 1.1 dongles does not accept any bitfield so don't try to set - * any event mask for pre 1.2 devices */ - if (hdev->hci_ver < BLUETOOTH_VER_1_2) - return; - - if (lmp_bredr_capable(hdev)) { - events[4] |= 0x01; /* Flow Specification Complete */ - events[4] |= 0x02; /* Inquiry Result with RSSI */ - events[4] |= 0x04; /* Read Remote Extended Features Complete */ - events[5] |= 0x08; /* Synchronous Connection Complete */ - events[5] |= 0x10; /* Synchronous Connection Changed */ - } - - if (lmp_inq_rssi_capable(hdev)) - events[4] |= 0x02; /* Inquiry Result with RSSI */ - - if (lmp_sniffsubr_capable(hdev)) - events[5] |= 0x20; /* Sniff Subrating */ - - if (lmp_pause_enc_capable(hdev)) - events[5] |= 0x80; /* Encryption Key Refresh Complete */ - - if (lmp_ext_inq_capable(hdev)) - events[5] |= 0x40; /* Extended Inquiry Result */ - - if (lmp_no_flush_capable(hdev)) - events[7] |= 0x01; /* Enhanced Flush Complete */ - - if (lmp_lsto_capable(hdev)) - events[6] |= 0x80; /* Link Supervision Timeout Changed */ - - if (lmp_ssp_capable(hdev)) { - events[6] |= 0x01; /* IO Capability Request */ - events[6] |= 0x02; /* IO Capability Response */ - events[6] |= 0x04; /* User Confirmation Request */ - events[6] |= 0x08; /* User Passkey Request */ - events[6] |= 0x10; /* Remote OOB Data Request */ - events[6] |= 0x20; /* Simple Pairing Complete */ - events[7] |= 0x04; /* User Passkey Notification */ - events[7] |= 0x08; /* Keypress Notification */ - events[7] |= 0x10; /* Remote Host Supported - * Features Notification */ - } - - if (lmp_le_capable(hdev)) - events[7] |= 0x20; /* LE Meta-Event */ - - hci_send_cmd(hdev, HCI_OP_SET_EVENT_MASK, sizeof(events), events); - - if (lmp_le_capable(hdev)) { - memset(events, 0, sizeof(events)); - events[0] = 0x1f; - hci_send_cmd(hdev, HCI_OP_LE_SET_EVENT_MASK, - sizeof(events), events); - } -} - -static void bredr_setup(struct hci_dev *hdev) -{ - struct hci_cp_delete_stored_link_key cp; - __le16 param; - __u8 flt_type; - - /* Read Buffer Size (ACL mtu, max pkt, etc.) */ - hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL); - - /* Read Class of Device */ - hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); - - /* Read Local Name */ - hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL); - - /* Read Voice Setting */ - hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL); - - /* Clear Event Filters */ - flt_type = HCI_FLT_CLEAR_ALL; - hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type); - - /* Connection accept timeout ~20 secs */ - param = __constant_cpu_to_le16(0x7d00); - hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); - - bacpy(&cp.bdaddr, BDADDR_ANY); - cp.delete_all = 1; - hci_send_cmd(hdev, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp); -} - -static void le_setup(struct hci_dev *hdev) -{ - /* Read LE Buffer Size */ - hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); - - /* Read LE Local Supported Features */ - hci_send_cmd(hdev, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); - - /* Read LE Advertising Channel TX Power */ - hci_send_cmd(hdev, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); - - /* Read LE White List Size */ - hci_send_cmd(hdev, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); - - /* Read LE Supported States */ - hci_send_cmd(hdev, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); -} - -static void hci_setup(struct hci_dev *hdev) -{ - if (hdev->dev_type != HCI_BREDR) - return; - - /* Read BD Address */ - hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL); - - if (lmp_bredr_capable(hdev)) - bredr_setup(hdev); - - if (lmp_le_capable(hdev)) - le_setup(hdev); - - hci_setup_event_mask(hdev); - - if (hdev->hci_ver > BLUETOOTH_VER_1_1) - hci_send_cmd(hdev, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); - - if (lmp_ssp_capable(hdev)) { - if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) { - u8 mode = 0x01; - hci_send_cmd(hdev, HCI_OP_WRITE_SSP_MODE, - sizeof(mode), &mode); - } else { - struct hci_cp_write_eir cp; - - memset(hdev->eir, 0, sizeof(hdev->eir)); - memset(&cp, 0, sizeof(cp)); - - hci_send_cmd(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp); - } - } - - if (lmp_inq_rssi_capable(hdev)) - hci_setup_inquiry_mode(hdev); - - if (lmp_inq_tx_pwr_capable(hdev)) - hci_send_cmd(hdev, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); - - if (lmp_ext_feat_capable(hdev)) { - struct hci_cp_read_local_ext_features cp; - - cp.page = 0x01; - hci_send_cmd(hdev, HCI_OP_READ_LOCAL_EXT_FEATURES, sizeof(cp), - &cp); - } - - if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) { - u8 enable = 1; - hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), - &enable); - } -} - static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb) { struct hci_rp_read_local_version *rp = (void *) skb->data; @@ -684,7 +455,7 @@ static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb) BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); if (rp->status) - goto done; + return; hdev->hci_ver = rp->hci_ver; hdev->hci_rev = __le16_to_cpu(rp->hci_rev); @@ -694,30 +465,6 @@ static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb) BT_DBG("%s manufacturer 0x%4.4x hci ver %d:%d", hdev->name, hdev->manufacturer, hdev->hci_ver, hdev->hci_rev); - - if (test_bit(HCI_INIT, &hdev->flags)) - hci_setup(hdev); - -done: - hci_req_complete(hdev, HCI_OP_READ_LOCAL_VERSION, rp->status); -} - -static void hci_setup_link_policy(struct hci_dev *hdev) -{ - struct hci_cp_write_def_link_policy cp; - u16 link_policy = 0; - - if (lmp_rswitch_capable(hdev)) - link_policy |= HCI_LP_RSWITCH; - if (lmp_hold_capable(hdev)) - link_policy |= HCI_LP_HOLD; - if (lmp_sniff_capable(hdev)) - link_policy |= HCI_LP_SNIFF; - if (lmp_park_capable(hdev)) - link_policy |= HCI_LP_PARK; - - cp.policy = cpu_to_le16(link_policy); - hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); } static void hci_cc_read_local_commands(struct hci_dev *hdev, @@ -727,16 +474,8 @@ static void hci_cc_read_local_commands(struct hci_dev *hdev, BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); - if (rp->status) - goto done; - - memcpy(hdev->commands, rp->commands, sizeof(hdev->commands)); - - if (test_bit(HCI_INIT, &hdev->flags) && (hdev->commands[5] & 0x10)) - hci_setup_link_policy(hdev); - -done: - hci_req_complete(hdev, HCI_OP_READ_LOCAL_COMMANDS, rp->status); + if (!rp->status) + memcpy(hdev->commands, rp->commands, sizeof(hdev->commands)); } static void hci_cc_read_local_features(struct hci_dev *hdev, @@ -754,18 +493,18 @@ static void hci_cc_read_local_features(struct hci_dev *hdev, /* Adjust default settings according to features * supported by device. */ - if (hdev->features[0] & LMP_3SLOT) + if (hdev->features[0][0] & LMP_3SLOT) hdev->pkt_type |= (HCI_DM3 | HCI_DH3); - if (hdev->features[0] & LMP_5SLOT) + if (hdev->features[0][0] & LMP_5SLOT) hdev->pkt_type |= (HCI_DM5 | HCI_DH5); - if (hdev->features[1] & LMP_HV2) { + if (hdev->features[0][1] & LMP_HV2) { hdev->pkt_type |= (HCI_HV2); hdev->esco_type |= (ESCO_HV2); } - if (hdev->features[1] & LMP_HV3) { + if (hdev->features[0][1] & LMP_HV3) { hdev->pkt_type |= (HCI_HV3); hdev->esco_type |= (ESCO_HV3); } @@ -773,42 +512,26 @@ static void hci_cc_read_local_features(struct hci_dev *hdev, if (lmp_esco_capable(hdev)) hdev->esco_type |= (ESCO_EV3); - if (hdev->features[4] & LMP_EV4) + if (hdev->features[0][4] & LMP_EV4) hdev->esco_type |= (ESCO_EV4); - if (hdev->features[4] & LMP_EV5) + if (hdev->features[0][4] & LMP_EV5) hdev->esco_type |= (ESCO_EV5); - if (hdev->features[5] & LMP_EDR_ESCO_2M) + if (hdev->features[0][5] & LMP_EDR_ESCO_2M) hdev->esco_type |= (ESCO_2EV3); - if (hdev->features[5] & LMP_EDR_ESCO_3M) + if (hdev->features[0][5] & LMP_EDR_ESCO_3M) hdev->esco_type |= (ESCO_3EV3); - if (hdev->features[5] & LMP_EDR_3S_ESCO) + if (hdev->features[0][5] & LMP_EDR_3S_ESCO) hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5); BT_DBG("%s features 0x%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x", hdev->name, - hdev->features[0], hdev->features[1], - hdev->features[2], hdev->features[3], - hdev->features[4], hdev->features[5], - hdev->features[6], hdev->features[7]); -} - -static void hci_set_le_support(struct hci_dev *hdev) -{ - struct hci_cp_write_le_host_supported cp; - - memset(&cp, 0, sizeof(cp)); - - if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { - cp.le = 1; - cp.simul = lmp_le_br_capable(hdev); - } - - if (cp.le != lmp_host_le_capable(hdev)) - hci_send_cmd(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), - &cp); + hdev->features[0][0], hdev->features[0][1], + hdev->features[0][2], hdev->features[0][3], + hdev->features[0][4], hdev->features[0][5], + hdev->features[0][6], hdev->features[0][7]); } static void hci_cc_read_local_ext_features(struct hci_dev *hdev, @@ -819,22 +542,12 @@ static void hci_cc_read_local_ext_features(struct hci_dev *hdev, BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); if (rp->status) - goto done; - - switch (rp->page) { - case 0: - memcpy(hdev->features, rp->features, 8); - break; - case 1: - memcpy(hdev->host_features, rp->features, 8); - break; - } + return; - if (test_bit(HCI_INIT, &hdev->flags) && lmp_le_capable(hdev)) - hci_set_le_support(hdev); + hdev->max_page = rp->max_page; -done: - hci_req_complete(hdev, HCI_OP_READ_LOCAL_EXT_FEATURES, rp->status); + if (rp->page < HCI_MAX_PAGES) + memcpy(hdev->features[rp->page], rp->features, 8); } static void hci_cc_read_flow_control_mode(struct hci_dev *hdev, @@ -844,12 +557,8 @@ static void hci_cc_read_flow_control_mode(struct hci_dev *hdev, BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); - if (rp->status) - return; - - hdev->flow_ctl_mode = rp->mode; - - hci_req_complete(hdev, HCI_OP_READ_FLOW_CONTROL_MODE, rp->status); + if (!rp->status) + hdev->flow_ctl_mode = rp->mode; } static void hci_cc_read_buffer_size(struct hci_dev *hdev, struct sk_buff *skb) @@ -886,8 +595,65 @@ static void hci_cc_read_bd_addr(struct hci_dev *hdev, struct sk_buff *skb) if (!rp->status) bacpy(&hdev->bdaddr, &rp->bdaddr); +} + +static void hci_cc_read_page_scan_activity(struct hci_dev *hdev, + struct sk_buff *skb) +{ + struct hci_rp_read_page_scan_activity *rp = (void *) skb->data; + + BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); - hci_req_complete(hdev, HCI_OP_READ_BD_ADDR, rp->status); + if (test_bit(HCI_INIT, &hdev->flags) && !rp->status) { + hdev->page_scan_interval = __le16_to_cpu(rp->interval); + hdev->page_scan_window = __le16_to_cpu(rp->window); + } +} + +static void hci_cc_write_page_scan_activity(struct hci_dev *hdev, + struct sk_buff *skb) +{ + u8 status = *((u8 *) skb->data); + struct hci_cp_write_page_scan_activity *sent; + + BT_DBG("%s status 0x%2.2x", hdev->name, status); + + if (status) + return; + + sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY); + if (!sent) + return; + + hdev->page_scan_interval = __le16_to_cpu(sent->interval); + hdev->page_scan_window = __le16_to_cpu(sent->window); +} + +static void hci_cc_read_page_scan_type(struct hci_dev *hdev, + struct sk_buff *skb) +{ + struct hci_rp_read_page_scan_type *rp = (void *) skb->data; + + BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); + + if (test_bit(HCI_INIT, &hdev->flags) && !rp->status) + hdev->page_scan_type = rp->type; +} + +static void hci_cc_write_page_scan_type(struct hci_dev *hdev, + struct sk_buff *skb) +{ + u8 status = *((u8 *) skb->data); + u8 *type; + + BT_DBG("%s status 0x%2.2x", hdev->name, status); + + if (status) + return; + + type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE); + if (type) + hdev->page_scan_type = *type; } static void hci_cc_read_data_block_size(struct hci_dev *hdev, @@ -908,17 +674,6 @@ static void hci_cc_read_data_block_size(struct hci_dev *hdev, BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu, hdev->block_cnt, hdev->block_len); - - hci_req_complete(hdev, HCI_OP_READ_DATA_BLOCK_SIZE, rp->status); -} - -static void hci_cc_write_ca_timeout(struct hci_dev *hdev, struct sk_buff *skb) -{ - __u8 status = *((__u8 *) skb->data); - - BT_DBG("%s status 0x%2.2x", hdev->name, status); - - hci_req_complete(hdev, HCI_OP_WRITE_CA_TIMEOUT, status); } static void hci_cc_read_local_amp_info(struct hci_dev *hdev, @@ -942,8 +697,6 @@ static void hci_cc_read_local_amp_info(struct hci_dev *hdev, hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to); hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to); - hci_req_complete(hdev, HCI_OP_READ_LOCAL_AMP_INFO, rp->status); - a2mp_rsp: a2mp_send_getinfo_rsp(hdev); } @@ -985,35 +738,6 @@ a2mp_rsp: a2mp_send_create_phy_link_req(hdev, rp->status); } -static void hci_cc_delete_stored_link_key(struct hci_dev *hdev, - struct sk_buff *skb) -{ - __u8 status = *((__u8 *) skb->data); - - BT_DBG("%s status 0x%2.2x", hdev->name, status); - - hci_req_complete(hdev, HCI_OP_DELETE_STORED_LINK_KEY, status); -} - -static void hci_cc_set_event_mask(struct hci_dev *hdev, struct sk_buff *skb) -{ - __u8 status = *((__u8 *) skb->data); - - BT_DBG("%s status 0x%2.2x", hdev->name, status); - - hci_req_complete(hdev, HCI_OP_SET_EVENT_MASK, status); -} - -static void hci_cc_write_inquiry_mode(struct hci_dev *hdev, - struct sk_buff *skb) -{ - __u8 status = *((__u8 *) skb->data); - - BT_DBG("%s status 0x%2.2x", hdev->name, status); - - hci_req_complete(hdev, HCI_OP_WRITE_INQUIRY_MODE, status); -} - static void hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, struct sk_buff *skb) { @@ -1023,17 +747,6 @@ static void hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, if (!rp->status) hdev->inq_tx_power = rp->tx_power; - - hci_req_complete(hdev, HCI_OP_READ_INQ_RSP_TX_POWER, rp->status); -} - -static void hci_cc_set_event_flt(struct hci_dev *hdev, struct sk_buff *skb) -{ - __u8 status = *((__u8 *) skb->data); - - BT_DBG("%s status 0x%2.2x", hdev->name, status); - - hci_req_complete(hdev, HCI_OP_SET_EVENT_FLT, status); } static void hci_cc_pin_code_reply(struct hci_dev *hdev, struct sk_buff *skb) @@ -1095,8 +808,6 @@ static void hci_cc_le_read_buffer_size(struct hci_dev *hdev, hdev->le_cnt = hdev->le_pkts; BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts); - - hci_req_complete(hdev, HCI_OP_LE_READ_BUFFER_SIZE, rp->status); } static void hci_cc_le_read_local_features(struct hci_dev *hdev, @@ -1108,8 +819,6 @@ static void hci_cc_le_read_local_features(struct hci_dev *hdev, if (!rp->status) memcpy(hdev->le_features, rp->features, 8); - - hci_req_complete(hdev, HCI_OP_LE_READ_LOCAL_FEATURES, rp->status); } static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, @@ -1119,22 +828,8 @@ static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); - if (!rp->status) { + if (!rp->status) hdev->adv_tx_power = rp->tx_power; - if (!test_bit(HCI_INIT, &hdev->flags)) - hci_update_ad(hdev); - } - - hci_req_complete(hdev, HCI_OP_LE_READ_ADV_TX_POWER, rp->status); -} - -static void hci_cc_le_set_event_mask(struct hci_dev *hdev, struct sk_buff *skb) -{ - __u8 status = *((__u8 *) skb->data); - - BT_DBG("%s status 0x%2.2x", hdev->name, status); - - hci_req_complete(hdev, HCI_OP_LE_SET_EVENT_MASK, status); } static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb) @@ -1231,12 +926,15 @@ static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb) clear_bit(HCI_LE_PERIPHERAL, &hdev->dev_flags); } - hci_dev_unlock(hdev); + if (!test_bit(HCI_INIT, &hdev->flags)) { + struct hci_request req; - if (!test_bit(HCI_INIT, &hdev->flags)) - hci_update_ad(hdev); + hci_req_init(&req, hdev); + hci_update_ad(&req); + hci_req_run(&req, NULL); + } - hci_req_complete(hdev, HCI_OP_LE_SET_ADV_ENABLE, status); + hci_dev_unlock(hdev); } static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb) @@ -1245,8 +943,6 @@ static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb) BT_DBG("%s status 0x%2.2x", hdev->name, status); - hci_req_complete(hdev, HCI_OP_LE_SET_SCAN_PARAM, status); - if (status) { hci_dev_lock(hdev); mgmt_start_discovery_failed(hdev, status); @@ -1268,9 +964,7 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev, return; switch (cp->enable) { - case LE_SCANNING_ENABLED: - hci_req_complete(hdev, HCI_OP_LE_SET_SCAN_ENABLE, status); - + case LE_SCAN_ENABLE: if (status) { hci_dev_lock(hdev); mgmt_start_discovery_failed(hdev, status); @@ -1285,7 +979,7 @@ static void hci_cc_le_set_scan_enable(struct hci_dev *hdev, hci_dev_unlock(hdev); break; - case LE_SCANNING_DISABLED: + case LE_SCAN_DISABLE: if (status) { hci_dev_lock(hdev); mgmt_stop_discovery_failed(hdev, status); @@ -1321,32 +1015,6 @@ static void hci_cc_le_read_white_list_size(struct hci_dev *hdev, if (!rp->status) hdev->le_white_list_size = rp->size; - - hci_req_complete(hdev, HCI_OP_LE_READ_WHITE_LIST_SIZE, rp->status); -} - -static void hci_cc_le_ltk_reply(struct hci_dev *hdev, struct sk_buff *skb) -{ - struct hci_rp_le_ltk_reply *rp = (void *) skb->data; - - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); - - if (rp->status) - return; - - hci_req_complete(hdev, HCI_OP_LE_LTK_REPLY, rp->status); -} - -static void hci_cc_le_ltk_neg_reply(struct hci_dev *hdev, struct sk_buff *skb) -{ - struct hci_rp_le_ltk_neg_reply *rp = (void *) skb->data; - - BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); - - if (rp->status) - return; - - hci_req_complete(hdev, HCI_OP_LE_LTK_NEG_REPLY, rp->status); } static void hci_cc_le_read_supported_states(struct hci_dev *hdev, @@ -1358,8 +1026,6 @@ static void hci_cc_le_read_supported_states(struct hci_dev *hdev, if (!rp->status) memcpy(hdev->le_states, rp->le_states, 8); - - hci_req_complete(hdev, HCI_OP_LE_READ_SUPPORTED_STATES, rp->status); } static void hci_cc_write_le_host_supported(struct hci_dev *hdev, @@ -1376,21 +1042,19 @@ static void hci_cc_write_le_host_supported(struct hci_dev *hdev, if (!status) { if (sent->le) - hdev->host_features[0] |= LMP_HOST_LE; + hdev->features[1][0] |= LMP_HOST_LE; else - hdev->host_features[0] &= ~LMP_HOST_LE; + hdev->features[1][0] &= ~LMP_HOST_LE; if (sent->simul) - hdev->host_features[0] |= LMP_HOST_LE_BREDR; + hdev->features[1][0] |= LMP_HOST_LE_BREDR; else - hdev->host_features[0] &= ~LMP_HOST_LE_BREDR; + hdev->features[1][0] &= ~LMP_HOST_LE_BREDR; } if (test_bit(HCI_MGMT, &hdev->dev_flags) && !test_bit(HCI_INIT, &hdev->flags)) mgmt_le_enable_complete(hdev, sent->le, status); - - hci_req_complete(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED, status); } static void hci_cc_write_remote_amp_assoc(struct hci_dev *hdev, @@ -1412,7 +1076,6 @@ static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) BT_DBG("%s status 0x%2.2x", hdev->name, status); if (status) { - hci_req_complete(hdev, HCI_OP_INQUIRY, status); hci_conn_check_pending(hdev); hci_dev_lock(hdev); if (test_bit(HCI_MGMT, &hdev->dev_flags)) @@ -1523,7 +1186,7 @@ static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) if (conn) { if (conn->state == BT_CONFIG) { hci_proto_connect_cfm(conn, status); - hci_conn_put(conn); + hci_conn_drop(conn); } } @@ -1550,7 +1213,7 @@ static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) if (conn) { if (conn->state == BT_CONFIG) { hci_proto_connect_cfm(conn, status); - hci_conn_put(conn); + hci_conn_drop(conn); } } @@ -1712,7 +1375,7 @@ static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) if (conn) { if (conn->state == BT_CONFIG) { hci_proto_connect_cfm(conn, status); - hci_conn_put(conn); + hci_conn_drop(conn); } } @@ -1739,7 +1402,7 @@ static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) if (conn) { if (conn->state == BT_CONFIG) { hci_proto_connect_cfm(conn, status); - hci_conn_put(conn); + hci_conn_drop(conn); } } @@ -1884,11 +1547,6 @@ static void hci_cs_le_create_conn(struct hci_dev *hdev, __u8 status) } } -static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) -{ - BT_DBG("%s status 0x%2.2x", hdev->name, status); -} - static void hci_cs_create_phylink(struct hci_dev *hdev, u8 status) { struct hci_cp_create_phy_link *cp; @@ -1930,11 +1588,6 @@ static void hci_cs_accept_phylink(struct hci_dev *hdev, u8 status) amp_write_remote_assoc(hdev, cp->phy_handle); } -static void hci_cs_create_logical_link(struct hci_dev *hdev, u8 status) -{ - BT_DBG("%s status 0x%2.2x", hdev->name, status); -} - static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) { __u8 status = *((__u8 *) skb->data); @@ -1943,13 +1596,14 @@ static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) BT_DBG("%s status 0x%2.2x", hdev->name, status); - hci_req_complete(hdev, HCI_OP_INQUIRY, status); - hci_conn_check_pending(hdev); if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) return; + smp_mb__after_clear_bit(); /* wake_up_bit advises about this barrier */ + wake_up_bit(&hdev->flags, HCI_INQUIRY); + if (!test_bit(HCI_MGMT, &hdev->dev_flags)) return; @@ -2048,7 +1702,6 @@ static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) } else conn->state = BT_CONNECTED; - hci_conn_hold_device(conn); hci_conn_add_sysfs(conn); if (test_bit(HCI_AUTH, &hdev->flags)) @@ -2095,42 +1748,6 @@ unlock: hci_conn_check_pending(hdev); } -void hci_conn_accept(struct hci_conn *conn, int mask) -{ - struct hci_dev *hdev = conn->hdev; - - BT_DBG("conn %p", conn); - - conn->state = BT_CONFIG; - - if (!lmp_esco_capable(hdev)) { - struct hci_cp_accept_conn_req cp; - - bacpy(&cp.bdaddr, &conn->dst); - - if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) - cp.role = 0x00; /* Become master */ - else - cp.role = 0x01; /* Remain slave */ - - hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); - } else /* lmp_esco_capable(hdev)) */ { - struct hci_cp_accept_sync_conn_req cp; - - bacpy(&cp.bdaddr, &conn->dst); - cp.pkt_type = cpu_to_le16(conn->pkt_type); - - cp.tx_bandwidth = __constant_cpu_to_le32(0x00001f40); - cp.rx_bandwidth = __constant_cpu_to_le32(0x00001f40); - cp.max_latency = __constant_cpu_to_le16(0xffff); - cp.content_format = cpu_to_le16(hdev->voice_setting); - cp.retrans_effort = 0xff; - - hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, - sizeof(cp), &cp); - } -} - static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb) { struct hci_ev_conn_request *ev = (void *) skb->data; @@ -2202,7 +1819,6 @@ static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb) } else { conn->state = BT_CONNECT2; hci_proto_connect_cfm(conn, 0); - hci_conn_put(conn); } } else { /* Connection rejected */ @@ -2309,14 +1925,14 @@ static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) } else { conn->state = BT_CONNECTED; hci_proto_connect_cfm(conn, ev->status); - hci_conn_put(conn); + hci_conn_drop(conn); } } else { hci_auth_cfm(conn, ev->status); hci_conn_hold(conn); conn->disc_timeout = HCI_DISCONN_TIMEOUT; - hci_conn_put(conn); + hci_conn_drop(conn); } if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { @@ -2399,8 +2015,8 @@ static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb) clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); if (ev->status && conn->state == BT_CONNECTED) { - hci_acl_disconn(conn, HCI_ERROR_AUTH_FAILURE); - hci_conn_put(conn); + hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); + hci_conn_drop(conn); goto unlock; } @@ -2409,7 +2025,7 @@ static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb) conn->state = BT_CONNECTED; hci_proto_connect_cfm(conn, ev->status); - hci_conn_put(conn); + hci_conn_drop(conn); } else hci_encrypt_cfm(conn, ev->status, ev->encrypt); } @@ -2456,7 +2072,7 @@ static void hci_remote_features_evt(struct hci_dev *hdev, goto unlock; if (!ev->status) - memcpy(conn->features, ev->features, 8); + memcpy(conn->features[0], ev->features, 8); if (conn->state != BT_CONFIG) goto unlock; @@ -2484,27 +2100,17 @@ static void hci_remote_features_evt(struct hci_dev *hdev, if (!hci_outgoing_auth_needed(hdev, conn)) { conn->state = BT_CONNECTED; hci_proto_connect_cfm(conn, ev->status); - hci_conn_put(conn); + hci_conn_drop(conn); } unlock: hci_dev_unlock(hdev); } -static void hci_remote_version_evt(struct hci_dev *hdev, struct sk_buff *skb) -{ - BT_DBG("%s", hdev->name); -} - -static void hci_qos_setup_complete_evt(struct hci_dev *hdev, - struct sk_buff *skb) -{ - BT_DBG("%s", hdev->name); -} - static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) { struct hci_ev_cmd_complete *ev = (void *) skb->data; + u8 status = skb->data[sizeof(*ev)]; __u16 opcode; skb_pull(skb, sizeof(*ev)); @@ -2588,10 +2194,6 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_cc_write_voice_setting(hdev, skb); break; - case HCI_OP_HOST_BUFFER_SIZE: - hci_cc_host_buffer_size(hdev, skb); - break; - case HCI_OP_WRITE_SSP_MODE: hci_cc_write_ssp_mode(hdev, skb); break; @@ -2620,46 +2222,42 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_cc_read_bd_addr(hdev, skb); break; - case HCI_OP_READ_DATA_BLOCK_SIZE: - hci_cc_read_data_block_size(hdev, skb); + case HCI_OP_READ_PAGE_SCAN_ACTIVITY: + hci_cc_read_page_scan_activity(hdev, skb); break; - case HCI_OP_WRITE_CA_TIMEOUT: - hci_cc_write_ca_timeout(hdev, skb); + case HCI_OP_WRITE_PAGE_SCAN_ACTIVITY: + hci_cc_write_page_scan_activity(hdev, skb); break; - case HCI_OP_READ_FLOW_CONTROL_MODE: - hci_cc_read_flow_control_mode(hdev, skb); + case HCI_OP_READ_PAGE_SCAN_TYPE: + hci_cc_read_page_scan_type(hdev, skb); break; - case HCI_OP_READ_LOCAL_AMP_INFO: - hci_cc_read_local_amp_info(hdev, skb); + case HCI_OP_WRITE_PAGE_SCAN_TYPE: + hci_cc_write_page_scan_type(hdev, skb); break; - case HCI_OP_READ_LOCAL_AMP_ASSOC: - hci_cc_read_local_amp_assoc(hdev, skb); + case HCI_OP_READ_DATA_BLOCK_SIZE: + hci_cc_read_data_block_size(hdev, skb); break; - case HCI_OP_DELETE_STORED_LINK_KEY: - hci_cc_delete_stored_link_key(hdev, skb); + case HCI_OP_READ_FLOW_CONTROL_MODE: + hci_cc_read_flow_control_mode(hdev, skb); break; - case HCI_OP_SET_EVENT_MASK: - hci_cc_set_event_mask(hdev, skb); + case HCI_OP_READ_LOCAL_AMP_INFO: + hci_cc_read_local_amp_info(hdev, skb); break; - case HCI_OP_WRITE_INQUIRY_MODE: - hci_cc_write_inquiry_mode(hdev, skb); + case HCI_OP_READ_LOCAL_AMP_ASSOC: + hci_cc_read_local_amp_assoc(hdev, skb); break; case HCI_OP_READ_INQ_RSP_TX_POWER: hci_cc_read_inq_rsp_tx_power(hdev, skb); break; - case HCI_OP_SET_EVENT_FLT: - hci_cc_set_event_flt(hdev, skb); - break; - case HCI_OP_PIN_CODE_REPLY: hci_cc_pin_code_reply(hdev, skb); break; @@ -2684,10 +2282,6 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_cc_le_read_adv_tx_power(hdev, skb); break; - case HCI_OP_LE_SET_EVENT_MASK: - hci_cc_le_set_event_mask(hdev, skb); - break; - case HCI_OP_USER_CONFIRM_REPLY: hci_cc_user_confirm_reply(hdev, skb); break; @@ -2720,14 +2314,6 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_cc_le_read_white_list_size(hdev, skb); break; - case HCI_OP_LE_LTK_REPLY: - hci_cc_le_ltk_reply(hdev, skb); - break; - - case HCI_OP_LE_LTK_NEG_REPLY: - hci_cc_le_ltk_neg_reply(hdev, skb); - break; - case HCI_OP_LE_READ_SUPPORTED_STATES: hci_cc_le_read_supported_states(hdev, skb); break; @@ -2745,9 +2331,11 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) break; } - if (ev->opcode != HCI_OP_NOP) + if (opcode != HCI_OP_NOP) del_timer(&hdev->cmd_timer); + hci_req_cmd_complete(hdev, opcode, status); + if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) { atomic_set(&hdev->cmd_cnt, 1); if (!skb_queue_empty(&hdev->cmd_q)) @@ -2817,10 +2405,6 @@ static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_cs_le_create_conn(hdev, ev->status); break; - case HCI_OP_LE_START_ENC: - hci_cs_le_start_enc(hdev, ev->status); - break; - case HCI_OP_CREATE_PHY_LINK: hci_cs_create_phylink(hdev, ev->status); break; @@ -2829,18 +2413,18 @@ static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_cs_accept_phylink(hdev, ev->status); break; - case HCI_OP_CREATE_LOGICAL_LINK: - hci_cs_create_logical_link(hdev, ev->status); - break; - default: BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); break; } - if (ev->opcode != HCI_OP_NOP) + if (opcode != HCI_OP_NOP) del_timer(&hdev->cmd_timer); + if (ev->status || + (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->req.event)) + hci_req_cmd_complete(hdev, opcode, ev->status); + if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) { atomic_set(&hdev->cmd_cnt, 1); if (!skb_queue_empty(&hdev->cmd_q)) @@ -3056,7 +2640,7 @@ static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb) if (conn->state == BT_CONNECTED) { hci_conn_hold(conn); conn->disc_timeout = HCI_PAIRING_TIMEOUT; - hci_conn_put(conn); + hci_conn_drop(conn); } if (!test_bit(HCI_PAIRABLE, &hdev->dev_flags)) @@ -3159,7 +2743,7 @@ static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb) if (ev->key_type != HCI_LK_CHANGED_COMBINATION) conn->key_type = ev->key_type; - hci_conn_put(conn); + hci_conn_drop(conn); } if (test_bit(HCI_LINK_KEYS, &hdev->dev_flags)) @@ -3300,6 +2884,9 @@ static void hci_remote_ext_features_evt(struct hci_dev *hdev, if (!conn) goto unlock; + if (ev->page < HCI_MAX_PAGES) + memcpy(conn->features[ev->page], ev->features, 8); + if (!ev->status && ev->page == 0x01) { struct inquiry_entry *ie; @@ -3307,8 +2894,19 @@ static void hci_remote_ext_features_evt(struct hci_dev *hdev, if (ie) ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); - if (ev->features[0] & LMP_HOST_SSP) + if (ev->features[0] & LMP_HOST_SSP) { set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); + } else { + /* It is mandatory by the Bluetooth specification that + * Extended Inquiry Results are only used when Secure + * Simple Pairing is enabled, but some devices violate + * this. + * + * To make these devices work, the internal SSP + * enabled flag needs to be cleared if the remote host + * features do not indicate SSP support */ + clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); + } } if (conn->state != BT_CONFIG) @@ -3328,7 +2926,7 @@ static void hci_remote_ext_features_evt(struct hci_dev *hdev, if (!hci_outgoing_auth_needed(hdev, conn)) { conn->state = BT_CONNECTED; hci_proto_connect_cfm(conn, ev->status); - hci_conn_put(conn); + hci_conn_drop(conn); } unlock: @@ -3362,7 +2960,6 @@ static void hci_sync_conn_complete_evt(struct hci_dev *hdev, conn->handle = __le16_to_cpu(ev->handle); conn->state = BT_CONNECTED; - hci_conn_hold_device(conn); hci_conn_add_sysfs(conn); break; @@ -3391,18 +2988,6 @@ unlock: hci_dev_unlock(hdev); } -static void hci_sync_conn_changed_evt(struct hci_dev *hdev, struct sk_buff *skb) -{ - BT_DBG("%s", hdev->name); -} - -static void hci_sniff_subrate_evt(struct hci_dev *hdev, struct sk_buff *skb) -{ - struct hci_ev_sniff_subrate *ev = (void *) skb->data; - - BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); -} - static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb) { @@ -3472,8 +3057,8 @@ static void hci_key_refresh_complete_evt(struct hci_dev *hdev, clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); if (ev->status && conn->state == BT_CONNECTED) { - hci_acl_disconn(conn, HCI_ERROR_AUTH_FAILURE); - hci_conn_put(conn); + hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); + hci_conn_drop(conn); goto unlock; } @@ -3482,13 +3067,13 @@ static void hci_key_refresh_complete_evt(struct hci_dev *hdev, conn->state = BT_CONNECTED; hci_proto_connect_cfm(conn, ev->status); - hci_conn_put(conn); + hci_conn_drop(conn); } else { hci_auth_cfm(conn, ev->status); hci_conn_hold(conn); conn->disc_timeout = HCI_DISCONN_TIMEOUT; - hci_conn_put(conn); + hci_conn_drop(conn); } unlock: @@ -3749,7 +3334,7 @@ static void hci_simple_pair_complete_evt(struct hci_dev *hdev, mgmt_auth_failed(hdev, &conn->dst, conn->type, conn->dst_type, ev->status); - hci_conn_put(conn); + hci_conn_drop(conn); unlock: hci_dev_unlock(hdev); @@ -3760,11 +3345,16 @@ static void hci_remote_host_features_evt(struct hci_dev *hdev, { struct hci_ev_remote_host_features *ev = (void *) skb->data; struct inquiry_entry *ie; + struct hci_conn *conn; BT_DBG("%s", hdev->name); hci_dev_lock(hdev); + conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); + if (conn) + memcpy(conn->features[1], ev->features, 8); + ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); if (ie) ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); @@ -3837,9 +3427,8 @@ static void hci_phy_link_complete_evt(struct hci_dev *hdev, hci_conn_hold(hcon); hcon->disc_timeout = HCI_DISCONN_TIMEOUT; - hci_conn_put(hcon); + hci_conn_drop(hcon); - hci_conn_hold_device(hcon); hci_conn_add_sysfs(hcon); amp_physical_cfm(bredr_hcon, hcon); @@ -3973,7 +3562,6 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) conn->handle = __le16_to_cpu(ev->handle); conn->state = BT_CONNECTED; - hci_conn_hold_device(conn); hci_conn_add_sysfs(conn); hci_proto_connect_cfm(conn, ev->status); @@ -4087,8 +3675,27 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) struct hci_event_hdr *hdr = (void *) skb->data; __u8 event = hdr->evt; + hci_dev_lock(hdev); + + /* Received events are (currently) only needed when a request is + * ongoing so avoid unnecessary memory allocation. + */ + if (hdev->req_status == HCI_REQ_PEND) { + kfree_skb(hdev->recv_evt); + hdev->recv_evt = skb_clone(skb, GFP_KERNEL); + } + + hci_dev_unlock(hdev); + skb_pull(skb, HCI_EVENT_HDR_SIZE); + if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->req.event == event) { + struct hci_command_hdr *hdr = (void *) hdev->sent_cmd->data; + u16 opcode = __le16_to_cpu(hdr->opcode); + + hci_req_cmd_complete(hdev, opcode, 0); + } + switch (event) { case HCI_EV_INQUIRY_COMPLETE: hci_inquiry_complete_evt(hdev, skb); @@ -4130,14 +3737,6 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) hci_remote_features_evt(hdev, skb); break; - case HCI_EV_REMOTE_VERSION: - hci_remote_version_evt(hdev, skb); - break; - - case HCI_EV_QOS_SETUP_COMPLETE: - hci_qos_setup_complete_evt(hdev, skb); - break; - case HCI_EV_CMD_COMPLETE: hci_cmd_complete_evt(hdev, skb); break; @@ -4194,14 +3793,6 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) hci_sync_conn_complete_evt(hdev, skb); break; - case HCI_EV_SYNC_CONN_CHANGED: - hci_sync_conn_changed_evt(hdev, skb); - break; - - case HCI_EV_SNIFF_SUBRATE: - hci_sniff_subrate_evt(hdev, skb); - break; - case HCI_EV_EXTENDED_INQUIRY_RESULT: hci_extended_inquiry_result_evt(hdev, skb); break; diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index 6a93614f2c49..9bd7d959e384 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -854,6 +854,11 @@ static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock, skb_queue_tail(&hdev->raw_q, skb); queue_work(hdev->workqueue, &hdev->tx_work); } else { + /* Stand-alone HCI commands must be flaged as + * single-command requests. + */ + bt_cb(skb)->req.start = true; + skb_queue_tail(&hdev->cmd_q, skb); queue_work(hdev->workqueue, &hdev->cmd_work); } @@ -1102,7 +1107,7 @@ int __init hci_sock_init(void) goto error; } - err = bt_procfs_init(THIS_MODULE, &init_net, "hci", &hci_sk_list, NULL); + err = bt_procfs_init(&init_net, "hci", &hci_sk_list, NULL); if (err < 0) { BT_ERR("Failed to create HCI proc file"); bt_sock_unregister(BTPROTO_HCI); @@ -1121,8 +1126,6 @@ error: void hci_sock_cleanup(void) { bt_procfs_cleanup(&init_net, "hci"); - if (bt_sock_unregister(BTPROTO_HCI) < 0) - BT_ERR("HCI socket unregistration failed"); - + bt_sock_unregister(BTPROTO_HCI); proto_unregister(&hci_sk_proto); } diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c index 23b4e242a31a..7ad6ecf36f20 100644 --- a/net/bluetooth/hci_sysfs.c +++ b/net/bluetooth/hci_sysfs.c @@ -48,10 +48,10 @@ static ssize_t show_link_features(struct device *dev, struct hci_conn *conn = to_hci_conn(dev); return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", - conn->features[0], conn->features[1], - conn->features[2], conn->features[3], - conn->features[4], conn->features[5], - conn->features[6], conn->features[7]); + conn->features[0][0], conn->features[0][1], + conn->features[0][2], conn->features[0][3], + conn->features[0][4], conn->features[0][5], + conn->features[0][6], conn->features[0][7]); } #define LINK_ATTR(_name, _mode, _show, _store) \ @@ -146,7 +146,6 @@ void hci_conn_del_sysfs(struct hci_conn *conn) } device_del(&conn->dev); - put_device(&conn->dev); hci_dev_put(hdev); } @@ -234,10 +233,10 @@ static ssize_t show_features(struct device *dev, struct hci_dev *hdev = to_hci_dev(dev); return sprintf(buf, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", - hdev->features[0], hdev->features[1], - hdev->features[2], hdev->features[3], - hdev->features[4], hdev->features[5], - hdev->features[6], hdev->features[7]); + hdev->features[0][0], hdev->features[0][1], + hdev->features[0][2], hdev->features[0][3], + hdev->features[0][4], hdev->features[0][5], + hdev->features[0][6], hdev->features[0][7]); } static ssize_t show_manufacturer(struct device *dev, @@ -590,10 +589,8 @@ int __init bt_sysfs_init(void) bt_debugfs = debugfs_create_dir("bluetooth", NULL); bt_class = class_create(THIS_MODULE, "bluetooth"); - if (IS_ERR(bt_class)) - return PTR_ERR(bt_class); - return 0; + return PTR_RET(bt_class); } void bt_sysfs_cleanup(void) diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c index a7352ff3fd1e..940f5acb6694 100644 --- a/net/bluetooth/hidp/core.c +++ b/net/bluetooth/hidp/core.c @@ -1,6 +1,7 @@ /* HIDP implementation for Linux Bluetooth stack (BlueZ). Copyright (C) 2003-2004 Marcel Holtmann <marcel@holtmann.org> + Copyright (C) 2013 David Herrmann <dh.herrmann@gmail.com> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as @@ -20,6 +21,7 @@ SOFTWARE IS DISCLAIMED. */ +#include <linux/kref.h> #include <linux/module.h> #include <linux/file.h> #include <linux/kthread.h> @@ -59,39 +61,20 @@ static unsigned char hidp_keycode[256] = { static unsigned char hidp_mkeyspat[] = { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 }; -static struct hidp_session *__hidp_get_session(bdaddr_t *bdaddr) -{ - struct hidp_session *session; - - BT_DBG(""); +static int hidp_session_probe(struct l2cap_conn *conn, + struct l2cap_user *user); +static void hidp_session_remove(struct l2cap_conn *conn, + struct l2cap_user *user); +static int hidp_session_thread(void *arg); +static void hidp_session_terminate(struct hidp_session *s); - list_for_each_entry(session, &hidp_session_list, list) { - if (!bacmp(bdaddr, &session->bdaddr)) - return session; - } - - return NULL; -} - -static void __hidp_link_session(struct hidp_session *session) -{ - list_add(&session->list, &hidp_session_list); -} - -static void __hidp_unlink_session(struct hidp_session *session) -{ - hci_conn_put_device(session->conn); - - list_del(&session->list); -} - -static void __hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci) +static void hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci) { memset(ci, 0, sizeof(*ci)); bacpy(&ci->bdaddr, &session->bdaddr); ci->flags = session->flags; - ci->state = session->state; + ci->state = BT_CONNECTED; ci->vendor = 0x0000; ci->product = 0x0000; @@ -115,58 +98,80 @@ static void __hidp_copy_session(struct hidp_session *session, struct hidp_connin } } -static int hidp_queue_event(struct hidp_session *session, struct input_dev *dev, - unsigned int type, unsigned int code, int value) +/* assemble skb, queue message on @transmit and wake up the session thread */ +static int hidp_send_message(struct hidp_session *session, struct socket *sock, + struct sk_buff_head *transmit, unsigned char hdr, + const unsigned char *data, int size) { - unsigned char newleds; struct sk_buff *skb; + struct sock *sk = sock->sk; - BT_DBG("session %p type %d code %d value %d", session, type, code, value); - - if (type != EV_LED) - return -1; - - newleds = (!!test_bit(LED_KANA, dev->led) << 3) | - (!!test_bit(LED_COMPOSE, dev->led) << 3) | - (!!test_bit(LED_SCROLLL, dev->led) << 2) | - (!!test_bit(LED_CAPSL, dev->led) << 1) | - (!!test_bit(LED_NUML, dev->led)); - - if (session->leds == newleds) - return 0; + BT_DBG("session %p data %p size %d", session, data, size); - session->leds = newleds; + if (atomic_read(&session->terminate)) + return -EIO; - skb = alloc_skb(3, GFP_ATOMIC); + skb = alloc_skb(size + 1, GFP_ATOMIC); if (!skb) { BT_ERR("Can't allocate memory for new frame"); return -ENOMEM; } - *skb_put(skb, 1) = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT; - *skb_put(skb, 1) = 0x01; - *skb_put(skb, 1) = newleds; - - skb_queue_tail(&session->intr_transmit, skb); + *skb_put(skb, 1) = hdr; + if (data && size > 0) + memcpy(skb_put(skb, size), data, size); - hidp_schedule(session); + skb_queue_tail(transmit, skb); + wake_up_interruptible(sk_sleep(sk)); return 0; } -static int hidp_hidinput_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) +static int hidp_send_ctrl_message(struct hidp_session *session, + unsigned char hdr, const unsigned char *data, + int size) { - struct hid_device *hid = input_get_drvdata(dev); - struct hidp_session *session = hid->driver_data; + return hidp_send_message(session, session->ctrl_sock, + &session->ctrl_transmit, hdr, data, size); +} - return hidp_queue_event(session, dev, type, code, value); +static int hidp_send_intr_message(struct hidp_session *session, + unsigned char hdr, const unsigned char *data, + int size) +{ + return hidp_send_message(session, session->intr_sock, + &session->intr_transmit, hdr, data, size); } -static int hidp_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) +static int hidp_input_event(struct input_dev *dev, unsigned int type, + unsigned int code, int value) { struct hidp_session *session = input_get_drvdata(dev); + unsigned char newleds; + unsigned char hdr, data[2]; + + BT_DBG("session %p type %d code %d value %d", + session, type, code, value); + + if (type != EV_LED) + return -1; + + newleds = (!!test_bit(LED_KANA, dev->led) << 3) | + (!!test_bit(LED_COMPOSE, dev->led) << 3) | + (!!test_bit(LED_SCROLLL, dev->led) << 2) | + (!!test_bit(LED_CAPSL, dev->led) << 1) | + (!!test_bit(LED_NUML, dev->led)); - return hidp_queue_event(session, dev, type, code, value); + if (session->leds == newleds) + return 0; + + session->leds = newleds; + + hdr = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT; + data[0] = 0x01; + data[1] = newleds; + + return hidp_send_intr_message(session, hdr, data, 2); } static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb) @@ -224,71 +229,9 @@ static void hidp_input_report(struct hidp_session *session, struct sk_buff *skb) input_sync(dev); } -static int __hidp_send_ctrl_message(struct hidp_session *session, - unsigned char hdr, unsigned char *data, - int size) -{ - struct sk_buff *skb; - - BT_DBG("session %p data %p size %d", session, data, size); - - if (atomic_read(&session->terminate)) - return -EIO; - - skb = alloc_skb(size + 1, GFP_ATOMIC); - if (!skb) { - BT_ERR("Can't allocate memory for new frame"); - return -ENOMEM; - } - - *skb_put(skb, 1) = hdr; - if (data && size > 0) - memcpy(skb_put(skb, size), data, size); - - skb_queue_tail(&session->ctrl_transmit, skb); - - return 0; -} - -static int hidp_send_ctrl_message(struct hidp_session *session, - unsigned char hdr, unsigned char *data, int size) -{ - int err; - - err = __hidp_send_ctrl_message(session, hdr, data, size); - - hidp_schedule(session); - - return err; -} - -static int hidp_queue_report(struct hidp_session *session, - unsigned char *data, int size) -{ - struct sk_buff *skb; - - BT_DBG("session %p hid %p data %p size %d", session, session->hid, data, size); - - skb = alloc_skb(size + 1, GFP_ATOMIC); - if (!skb) { - BT_ERR("Can't allocate memory for new frame"); - return -ENOMEM; - } - - *skb_put(skb, 1) = 0xa2; - if (size > 0) - memcpy(skb_put(skb, size), data, size); - - skb_queue_tail(&session->intr_transmit, skb); - - hidp_schedule(session); - - return 0; -} - static int hidp_send_report(struct hidp_session *session, struct hid_report *report) { - unsigned char buf[32]; + unsigned char buf[32], hdr; int rsize; rsize = ((report->size - 1) >> 3) + 1 + (report->id > 0); @@ -296,8 +239,9 @@ static int hidp_send_report(struct hidp_session *session, struct hid_report *rep return -EIO; hid_output_report(report, buf); + hdr = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT; - return hidp_queue_report(session, buf, rsize); + return hidp_send_intr_message(session, hdr, buf, rsize); } static int hidp_get_raw_report(struct hid_device *hid, @@ -311,6 +255,9 @@ static int hidp_get_raw_report(struct hid_device *hid, int numbered_reports = hid->report_enum[report_type].numbered; int ret; + if (atomic_read(&session->terminate)) + return -EIO; + switch (report_type) { case HID_FEATURE_REPORT: report_type = HIDP_TRANS_GET_REPORT | HIDP_DATA_RTYPE_FEATURE; @@ -333,17 +280,19 @@ static int hidp_get_raw_report(struct hid_device *hid, session->waiting_report_number = numbered_reports ? report_number : -1; set_bit(HIDP_WAITING_FOR_RETURN, &session->flags); data[0] = report_number; - ret = hidp_send_ctrl_message(hid->driver_data, report_type, data, 1); + ret = hidp_send_ctrl_message(session, report_type, data, 1); if (ret) goto err; /* Wait for the return of the report. The returned report gets put in session->report_return. */ - while (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags)) { + while (test_bit(HIDP_WAITING_FOR_RETURN, &session->flags) && + !atomic_read(&session->terminate)) { int res; res = wait_event_interruptible_timeout(session->report_queue, - !test_bit(HIDP_WAITING_FOR_RETURN, &session->flags), + !test_bit(HIDP_WAITING_FOR_RETURN, &session->flags) + || atomic_read(&session->terminate), 5*HZ); if (res == 0) { /* timeout */ @@ -386,14 +335,11 @@ static int hidp_output_raw_report(struct hid_device *hid, unsigned char *data, s struct hidp_session *session = hid->driver_data; int ret; - switch (report_type) { - case HID_FEATURE_REPORT: - report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_FEATURE; - break; - case HID_OUTPUT_REPORT: - report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_OUPUT; - break; - default: + if (report_type == HID_OUTPUT_REPORT) { + report_type = HIDP_TRANS_DATA | HIDP_DATA_RTYPE_OUPUT; + return hidp_send_intr_message(session, report_type, + data, count); + } else if (report_type != HID_FEATURE_REPORT) { return -EINVAL; } @@ -402,17 +348,19 @@ static int hidp_output_raw_report(struct hid_device *hid, unsigned char *data, s /* Set up our wait, and send the report request to the device. */ set_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags); - ret = hidp_send_ctrl_message(hid->driver_data, report_type, data, - count); + report_type = HIDP_TRANS_SET_REPORT | HIDP_DATA_RTYPE_FEATURE; + ret = hidp_send_ctrl_message(session, report_type, data, count); if (ret) goto err; /* Wait for the ACK from the device. */ - while (test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags)) { + while (test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags) && + !atomic_read(&session->terminate)) { int res; res = wait_event_interruptible_timeout(session->report_queue, - !test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags), + !test_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags) + || atomic_read(&session->terminate), 10*HZ); if (res == 0) { /* timeout */ @@ -443,8 +391,7 @@ static void hidp_idle_timeout(unsigned long arg) { struct hidp_session *session = (struct hidp_session *) arg; - atomic_inc(&session->terminate); - wake_up_process(session->task); + hidp_session_terminate(session); } static void hidp_set_timer(struct hidp_session *session) @@ -487,12 +434,12 @@ static void hidp_process_handshake(struct hidp_session *session, case HIDP_HSHK_ERR_FATAL: /* Device requests a reboot, as this is the only way this error * can be recovered. */ - __hidp_send_ctrl_message(session, + hidp_send_ctrl_message(session, HIDP_TRANS_HID_CONTROL | HIDP_CTRL_SOFT_RESET, NULL, 0); break; default: - __hidp_send_ctrl_message(session, + hidp_send_ctrl_message(session, HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); break; } @@ -512,8 +459,7 @@ static void hidp_process_hid_control(struct hidp_session *session, skb_queue_purge(&session->ctrl_transmit); skb_queue_purge(&session->intr_transmit); - atomic_inc(&session->terminate); - wake_up_process(current); + hidp_session_terminate(session); } } @@ -541,7 +487,7 @@ static int hidp_process_data(struct hidp_session *session, struct sk_buff *skb, break; default: - __hidp_send_ctrl_message(session, + hidp_send_ctrl_message(session, HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_INVALID_PARAMETER, NULL, 0); } @@ -588,7 +534,7 @@ static void hidp_recv_ctrl_frame(struct hidp_session *session, break; default: - __hidp_send_ctrl_message(session, + hidp_send_ctrl_message(session, HIDP_TRANS_HANDSHAKE | HIDP_HSHK_ERR_UNSUPPORTED_REQUEST, NULL, 0); break; } @@ -639,32 +585,24 @@ static int hidp_send_frame(struct socket *sock, unsigned char *data, int len) return kernel_sendmsg(sock, &msg, &iv, 1, len); } -static void hidp_process_intr_transmit(struct hidp_session *session) +/* dequeue message from @transmit and send via @sock */ +static void hidp_process_transmit(struct hidp_session *session, + struct sk_buff_head *transmit, + struct socket *sock) { struct sk_buff *skb; + int ret; BT_DBG("session %p", session); - while ((skb = skb_dequeue(&session->intr_transmit))) { - if (hidp_send_frame(session->intr_sock, skb->data, skb->len) < 0) { - skb_queue_head(&session->intr_transmit, skb); + while ((skb = skb_dequeue(transmit))) { + ret = hidp_send_frame(sock, skb->data, skb->len); + if (ret == -EAGAIN) { + skb_queue_head(transmit, skb); break; - } - - hidp_set_timer(session); - kfree_skb(skb); - } -} - -static void hidp_process_ctrl_transmit(struct hidp_session *session) -{ - struct sk_buff *skb; - - BT_DBG("session %p", session); - - while ((skb = skb_dequeue(&session->ctrl_transmit))) { - if (hidp_send_frame(session->ctrl_sock, skb->data, skb->len) < 0) { - skb_queue_head(&session->ctrl_transmit, skb); + } else if (ret < 0) { + hidp_session_terminate(session); + kfree_skb(skb); break; } @@ -673,121 +611,6 @@ static void hidp_process_ctrl_transmit(struct hidp_session *session) } } -static int hidp_session(void *arg) -{ - struct hidp_session *session = arg; - struct sock *ctrl_sk = session->ctrl_sock->sk; - struct sock *intr_sk = session->intr_sock->sk; - struct sk_buff *skb; - wait_queue_t ctrl_wait, intr_wait; - - BT_DBG("session %p", session); - - __module_get(THIS_MODULE); - set_user_nice(current, -15); - - init_waitqueue_entry(&ctrl_wait, current); - init_waitqueue_entry(&intr_wait, current); - add_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait); - add_wait_queue(sk_sleep(intr_sk), &intr_wait); - session->waiting_for_startup = 0; - wake_up_interruptible(&session->startup_queue); - set_current_state(TASK_INTERRUPTIBLE); - while (!atomic_read(&session->terminate)) { - if (ctrl_sk->sk_state != BT_CONNECTED || - intr_sk->sk_state != BT_CONNECTED) - break; - - while ((skb = skb_dequeue(&intr_sk->sk_receive_queue))) { - skb_orphan(skb); - if (!skb_linearize(skb)) - hidp_recv_intr_frame(session, skb); - else - kfree_skb(skb); - } - - hidp_process_intr_transmit(session); - - while ((skb = skb_dequeue(&ctrl_sk->sk_receive_queue))) { - skb_orphan(skb); - if (!skb_linearize(skb)) - hidp_recv_ctrl_frame(session, skb); - else - kfree_skb(skb); - } - - hidp_process_ctrl_transmit(session); - - schedule(); - set_current_state(TASK_INTERRUPTIBLE); - } - set_current_state(TASK_RUNNING); - remove_wait_queue(sk_sleep(intr_sk), &intr_wait); - remove_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait); - - clear_bit(HIDP_WAITING_FOR_SEND_ACK, &session->flags); - clear_bit(HIDP_WAITING_FOR_RETURN, &session->flags); - wake_up_interruptible(&session->report_queue); - - down_write(&hidp_session_sem); - - hidp_del_timer(session); - - if (session->input) { - input_unregister_device(session->input); - session->input = NULL; - } - - if (session->hid) { - hid_destroy_device(session->hid); - session->hid = NULL; - } - - /* Wakeup user-space polling for socket errors */ - session->intr_sock->sk->sk_err = EUNATCH; - session->ctrl_sock->sk->sk_err = EUNATCH; - - hidp_schedule(session); - - fput(session->intr_sock->file); - - wait_event_timeout(*(sk_sleep(ctrl_sk)), - (ctrl_sk->sk_state == BT_CLOSED), msecs_to_jiffies(500)); - - fput(session->ctrl_sock->file); - - __hidp_unlink_session(session); - - up_write(&hidp_session_sem); - - kfree(session->rd_data); - kfree(session); - module_put_and_exit(0); - return 0; -} - -static struct hci_conn *hidp_get_connection(struct hidp_session *session) -{ - bdaddr_t *src = &bt_sk(session->ctrl_sock->sk)->src; - bdaddr_t *dst = &bt_sk(session->ctrl_sock->sk)->dst; - struct hci_conn *conn; - struct hci_dev *hdev; - - hdev = hci_get_route(dst, src); - if (!hdev) - return NULL; - - hci_dev_lock(hdev); - conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); - if (conn) - hci_conn_hold_device(conn); - hci_dev_unlock(hdev); - - hci_dev_put(hdev); - - return conn; -} - static int hidp_setup_input(struct hidp_session *session, struct hidp_connadd_req *req) { @@ -835,7 +658,7 @@ static int hidp_setup_input(struct hidp_session *session, input->relbit[0] |= BIT_MASK(REL_WHEEL); } - input->dev.parent = &session->conn->dev; + input->dev.parent = &session->conn->hcon->dev; input->event = hidp_input_event; @@ -894,7 +717,6 @@ static struct hid_ll_driver hidp_hid_driver = { .stop = hidp_stop, .open = hidp_open, .close = hidp_close, - .hidinput_input_event = hidp_hidinput_event, }; /* This function sets up the hid device. It does not add it @@ -939,7 +761,7 @@ static int hidp_setup_hid(struct hidp_session *session, snprintf(hid->uniq, sizeof(hid->uniq), "%pMR", &bt_sk(session->ctrl_sock->sk)->dst); - hid->dev.parent = &session->conn->dev; + hid->dev.parent = &session->conn->hcon->dev; hid->ll_driver = &hidp_hid_driver; hid->hid_get_raw_report = hidp_get_raw_report; @@ -961,80 +783,217 @@ fault: return err; } -int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock) +/* initialize session devices */ +static int hidp_session_dev_init(struct hidp_session *session, + struct hidp_connadd_req *req) { - struct hidp_session *session, *s; - int vendor, product; - int err; + int ret; - BT_DBG(""); + if (req->rd_size > 0) { + ret = hidp_setup_hid(session, req); + if (ret && ret != -ENODEV) + return ret; + } - if (bacmp(&bt_sk(ctrl_sock->sk)->src, &bt_sk(intr_sock->sk)->src) || - bacmp(&bt_sk(ctrl_sock->sk)->dst, &bt_sk(intr_sock->sk)->dst)) - return -ENOTUNIQ; + if (!session->hid) { + ret = hidp_setup_input(session, req); + if (ret < 0) + return ret; + } - BT_DBG("rd_data %p rd_size %d", req->rd_data, req->rd_size); + return 0; +} - down_write(&hidp_session_sem); +/* destroy session devices */ +static void hidp_session_dev_destroy(struct hidp_session *session) +{ + if (session->hid) + put_device(&session->hid->dev); + else if (session->input) + input_put_device(session->input); - s = __hidp_get_session(&bt_sk(ctrl_sock->sk)->dst); - if (s && s->state == BT_CONNECTED) { - up_write(&hidp_session_sem); - return -EEXIST; - } + kfree(session->rd_data); + session->rd_data = NULL; +} - session = kzalloc(sizeof(struct hidp_session), GFP_KERNEL); - if (!session) { - up_write(&hidp_session_sem); - return -ENOMEM; - } +/* add HID/input devices to their underlying bus systems */ +static int hidp_session_dev_add(struct hidp_session *session) +{ + int ret; - bacpy(&session->bdaddr, &bt_sk(ctrl_sock->sk)->dst); + /* Both HID and input systems drop a ref-count when unregistering the + * device but they don't take a ref-count when registering them. Work + * around this by explicitly taking a refcount during registration + * which is dropped automatically by unregistering the devices. */ - session->ctrl_mtu = min_t(uint, l2cap_pi(ctrl_sock->sk)->chan->omtu, - l2cap_pi(ctrl_sock->sk)->chan->imtu); - session->intr_mtu = min_t(uint, l2cap_pi(intr_sock->sk)->chan->omtu, - l2cap_pi(intr_sock->sk)->chan->imtu); + if (session->hid) { + ret = hid_add_device(session->hid); + if (ret) + return ret; + get_device(&session->hid->dev); + } else if (session->input) { + ret = input_register_device(session->input); + if (ret) + return ret; + input_get_device(session->input); + } - BT_DBG("ctrl mtu %d intr mtu %d", session->ctrl_mtu, session->intr_mtu); + return 0; +} - session->ctrl_sock = ctrl_sock; - session->intr_sock = intr_sock; - session->state = BT_CONNECTED; +/* remove HID/input devices from their bus systems */ +static void hidp_session_dev_del(struct hidp_session *session) +{ + if (session->hid) + hid_destroy_device(session->hid); + else if (session->input) + input_unregister_device(session->input); +} - session->conn = hidp_get_connection(session); - if (!session->conn) { - err = -ENOTCONN; - goto failed; - } +/* + * Create new session object + * Allocate session object, initialize static fields, copy input data into the + * object and take a reference to all sub-objects. + * This returns 0 on success and puts a pointer to the new session object in + * \out. Otherwise, an error code is returned. + * The new session object has an initial ref-count of 1. + */ +static int hidp_session_new(struct hidp_session **out, const bdaddr_t *bdaddr, + struct socket *ctrl_sock, + struct socket *intr_sock, + struct hidp_connadd_req *req, + struct l2cap_conn *conn) +{ + struct hidp_session *session; + int ret; + struct bt_sock *ctrl, *intr; + + ctrl = bt_sk(ctrl_sock->sk); + intr = bt_sk(intr_sock->sk); - setup_timer(&session->timer, hidp_idle_timeout, (unsigned long)session); + session = kzalloc(sizeof(*session), GFP_KERNEL); + if (!session) + return -ENOMEM; + /* object and runtime management */ + kref_init(&session->ref); + atomic_set(&session->state, HIDP_SESSION_IDLING); + init_waitqueue_head(&session->state_queue); + session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID); + + /* connection management */ + bacpy(&session->bdaddr, bdaddr); + session->conn = conn; + session->user.probe = hidp_session_probe; + session->user.remove = hidp_session_remove; + session->ctrl_sock = ctrl_sock; + session->intr_sock = intr_sock; skb_queue_head_init(&session->ctrl_transmit); skb_queue_head_init(&session->intr_transmit); + session->ctrl_mtu = min_t(uint, l2cap_pi(ctrl)->chan->omtu, + l2cap_pi(ctrl)->chan->imtu); + session->intr_mtu = min_t(uint, l2cap_pi(intr)->chan->omtu, + l2cap_pi(intr)->chan->imtu); + session->idle_to = req->idle_to; + /* device management */ + setup_timer(&session->timer, hidp_idle_timeout, + (unsigned long)session); + + /* session data */ mutex_init(&session->report_mutex); init_waitqueue_head(&session->report_queue); - init_waitqueue_head(&session->startup_queue); - session->waiting_for_startup = 1; - session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID); - session->idle_to = req->idle_to; - __hidp_link_session(session); + ret = hidp_session_dev_init(session, req); + if (ret) + goto err_free; - if (req->rd_size > 0) { - err = hidp_setup_hid(session, req); - if (err && err != -ENODEV) - goto purge; - } + l2cap_conn_get(session->conn); + get_file(session->intr_sock->file); + get_file(session->ctrl_sock->file); + *out = session; + return 0; - if (!session->hid) { - err = hidp_setup_input(session, req); - if (err < 0) - goto purge; +err_free: + kfree(session); + return ret; +} + +/* increase ref-count of the given session by one */ +static void hidp_session_get(struct hidp_session *session) +{ + kref_get(&session->ref); +} + +/* release callback */ +static void session_free(struct kref *ref) +{ + struct hidp_session *session = container_of(ref, struct hidp_session, + ref); + + hidp_session_dev_destroy(session); + skb_queue_purge(&session->ctrl_transmit); + skb_queue_purge(&session->intr_transmit); + fput(session->intr_sock->file); + fput(session->ctrl_sock->file); + l2cap_conn_put(session->conn); + kfree(session); +} + +/* decrease ref-count of the given session by one */ +static void hidp_session_put(struct hidp_session *session) +{ + kref_put(&session->ref, session_free); +} + +/* + * Search the list of active sessions for a session with target address + * \bdaddr. You must hold at least a read-lock on \hidp_session_sem. As long as + * you do not release this lock, the session objects cannot vanish and you can + * safely take a reference to the session yourself. + */ +static struct hidp_session *__hidp_session_find(const bdaddr_t *bdaddr) +{ + struct hidp_session *session; + + list_for_each_entry(session, &hidp_session_list, list) { + if (!bacmp(bdaddr, &session->bdaddr)) + return session; } - hidp_set_timer(session); + return NULL; +} + +/* + * Same as __hidp_session_find() but no locks must be held. This also takes a + * reference of the returned session (if non-NULL) so you must drop this + * reference if you no longer use the object. + */ +static struct hidp_session *hidp_session_find(const bdaddr_t *bdaddr) +{ + struct hidp_session *session; + + down_read(&hidp_session_sem); + + session = __hidp_session_find(bdaddr); + if (session) + hidp_session_get(session); + + up_read(&hidp_session_sem); + + return session; +} + +/* + * Start session synchronously + * This starts a session thread and waits until initialization + * is done or returns an error if it couldn't be started. + * If this returns 0 the session thread is up and running. You must call + * hipd_session_stop_sync() before deleting any runtime resources. + */ +static int hidp_session_start_sync(struct hidp_session *session) +{ + unsigned int vendor, product; if (session->hid) { vendor = session->hid->vendor; @@ -1047,98 +1006,320 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, product = 0x0000; } - session->task = kthread_run(hidp_session, session, "khidpd_%04x%04x", - vendor, product); - if (IS_ERR(session->task)) { - err = PTR_ERR(session->task); - goto unlink; - } + session->task = kthread_run(hidp_session_thread, session, + "khidpd_%04x%04x", vendor, product); + if (IS_ERR(session->task)) + return PTR_ERR(session->task); - while (session->waiting_for_startup) { - wait_event_interruptible(session->startup_queue, - !session->waiting_for_startup); - } + while (atomic_read(&session->state) <= HIDP_SESSION_IDLING) + wait_event(session->state_queue, + atomic_read(&session->state) > HIDP_SESSION_IDLING); - if (session->hid) - err = hid_add_device(session->hid); - else - err = input_register_device(session->input); + return 0; +} - if (err < 0) { - atomic_inc(&session->terminate); - wake_up_process(session->task); - up_write(&hidp_session_sem); - return err; - } +/* + * Terminate session thread + * Wake up session thread and notify it to stop. This is asynchronous and + * returns immediately. Call this whenever a runtime error occurs and you want + * the session to stop. + * Note: wake_up_process() performs any necessary memory-barriers for us. + */ +static void hidp_session_terminate(struct hidp_session *session) +{ + atomic_inc(&session->terminate); + wake_up_process(session->task); +} - if (session->input) { - hidp_send_ctrl_message(session, - HIDP_TRANS_SET_PROTOCOL | HIDP_PROTO_BOOT, NULL, 0); - session->flags |= (1 << HIDP_BOOT_PROTOCOL_MODE); +/* + * Probe HIDP session + * This is called from the l2cap_conn core when our l2cap_user object is bound + * to the hci-connection. We get the session via the \user object and can now + * start the session thread, register the HID/input devices and link it into + * the global session list. + * The global session-list owns its own reference to the session object so you + * can drop your own reference after registering the l2cap_user object. + */ +static int hidp_session_probe(struct l2cap_conn *conn, + struct l2cap_user *user) +{ + struct hidp_session *session = container_of(user, + struct hidp_session, + user); + struct hidp_session *s; + int ret; - session->leds = 0xff; - hidp_input_event(session->input, EV_LED, 0, 0); + down_write(&hidp_session_sem); + + /* check that no other session for this device exists */ + s = __hidp_session_find(&session->bdaddr); + if (s) { + ret = -EEXIST; + goto out_unlock; } + ret = hidp_session_start_sync(session); + if (ret) + goto out_unlock; + + ret = hidp_session_dev_add(session); + if (ret) + goto out_stop; + + hidp_session_get(session); + list_add(&session->list, &hidp_session_list); + ret = 0; + goto out_unlock; + +out_stop: + hidp_session_terminate(session); +out_unlock: up_write(&hidp_session_sem); - return 0; + return ret; +} -unlink: +/* + * Remove HIDP session + * Called from the l2cap_conn core when either we explicitly unregistered + * the l2cap_user object or if the underlying connection is shut down. + * We signal the hidp-session thread to shut down, unregister the HID/input + * devices and unlink the session from the global list. + * This drops the reference to the session that is owned by the global + * session-list. + * Note: We _must_ not synchronosly wait for the session-thread to shut down. + * This is, because the session-thread might be waiting for an HCI lock that is + * held while we are called. Therefore, we only unregister the devices and + * notify the session-thread to terminate. The thread itself owns a reference + * to the session object so it can safely shut down. + */ +static void hidp_session_remove(struct l2cap_conn *conn, + struct l2cap_user *user) +{ + struct hidp_session *session = container_of(user, + struct hidp_session, + user); + + down_write(&hidp_session_sem); + + hidp_session_terminate(session); + hidp_session_dev_del(session); + list_del(&session->list); + + up_write(&hidp_session_sem); + + hidp_session_put(session); +} + +/* + * Session Worker + * This performs the actual main-loop of the HIDP worker. We first check + * whether the underlying connection is still alive, then parse all pending + * messages and finally send all outstanding messages. + */ +static void hidp_session_run(struct hidp_session *session) +{ + struct sock *ctrl_sk = session->ctrl_sock->sk; + struct sock *intr_sk = session->intr_sock->sk; + struct sk_buff *skb; + + for (;;) { + /* + * This thread can be woken up two ways: + * - You call hidp_session_terminate() which sets the + * session->terminate flag and wakes this thread up. + * - Via modifying the socket state of ctrl/intr_sock. This + * thread is woken up by ->sk_state_changed(). + * + * Note: set_current_state() performs any necessary + * memory-barriers for us. + */ + set_current_state(TASK_INTERRUPTIBLE); + + if (atomic_read(&session->terminate)) + break; + + if (ctrl_sk->sk_state != BT_CONNECTED || + intr_sk->sk_state != BT_CONNECTED) + break; + + /* parse incoming intr-skbs */ + while ((skb = skb_dequeue(&intr_sk->sk_receive_queue))) { + skb_orphan(skb); + if (!skb_linearize(skb)) + hidp_recv_intr_frame(session, skb); + else + kfree_skb(skb); + } + + /* send pending intr-skbs */ + hidp_process_transmit(session, &session->intr_transmit, + session->intr_sock); + + /* parse incoming ctrl-skbs */ + while ((skb = skb_dequeue(&ctrl_sk->sk_receive_queue))) { + skb_orphan(skb); + if (!skb_linearize(skb)) + hidp_recv_ctrl_frame(session, skb); + else + kfree_skb(skb); + } + + /* send pending ctrl-skbs */ + hidp_process_transmit(session, &session->ctrl_transmit, + session->ctrl_sock); + + schedule(); + } + + atomic_inc(&session->terminate); + set_current_state(TASK_RUNNING); +} + +/* + * HIDP session thread + * This thread runs the I/O for a single HIDP session. Startup is synchronous + * which allows us to take references to ourself here instead of doing that in + * the caller. + * When we are ready to run we notify the caller and call hidp_session_run(). + */ +static int hidp_session_thread(void *arg) +{ + struct hidp_session *session = arg; + wait_queue_t ctrl_wait, intr_wait; + + BT_DBG("session %p", session); + + /* initialize runtime environment */ + hidp_session_get(session); + __module_get(THIS_MODULE); + set_user_nice(current, -15); + hidp_set_timer(session); + + init_waitqueue_entry(&ctrl_wait, current); + init_waitqueue_entry(&intr_wait, current); + add_wait_queue(sk_sleep(session->ctrl_sock->sk), &ctrl_wait); + add_wait_queue(sk_sleep(session->intr_sock->sk), &intr_wait); + /* This memory barrier is paired with wq_has_sleeper(). See + * sock_poll_wait() for more information why this is needed. */ + smp_mb(); + + /* notify synchronous startup that we're ready */ + atomic_inc(&session->state); + wake_up(&session->state_queue); + + /* run session */ + hidp_session_run(session); + + /* cleanup runtime environment */ + remove_wait_queue(sk_sleep(session->intr_sock->sk), &intr_wait); + remove_wait_queue(sk_sleep(session->intr_sock->sk), &ctrl_wait); + wake_up_interruptible(&session->report_queue); hidp_del_timer(session); - if (session->input) { - input_unregister_device(session->input); - session->input = NULL; + /* + * If we stopped ourself due to any internal signal, we should try to + * unregister our own session here to avoid having it linger until the + * parent l2cap_conn dies or user-space cleans it up. + * This does not deadlock as we don't do any synchronous shutdown. + * Instead, this call has the same semantics as if user-space tried to + * delete the session. + */ + l2cap_unregister_user(session->conn, &session->user); + hidp_session_put(session); + + module_put_and_exit(0); + return 0; +} + +static int hidp_verify_sockets(struct socket *ctrl_sock, + struct socket *intr_sock) +{ + struct bt_sock *ctrl, *intr; + struct hidp_session *session; + + if (!l2cap_is_socket(ctrl_sock) || !l2cap_is_socket(intr_sock)) + return -EINVAL; + + ctrl = bt_sk(ctrl_sock->sk); + intr = bt_sk(intr_sock->sk); + + if (bacmp(&ctrl->src, &intr->src) || bacmp(&ctrl->dst, &intr->dst)) + return -ENOTUNIQ; + if (ctrl->sk.sk_state != BT_CONNECTED || + intr->sk.sk_state != BT_CONNECTED) + return -EBADFD; + + /* early session check, we check again during session registration */ + session = hidp_session_find(&ctrl->dst); + if (session) { + hidp_session_put(session); + return -EEXIST; } - if (session->hid) { - hid_destroy_device(session->hid); - session->hid = NULL; + return 0; +} + +int hidp_connection_add(struct hidp_connadd_req *req, + struct socket *ctrl_sock, + struct socket *intr_sock) +{ + struct hidp_session *session; + struct l2cap_conn *conn; + struct l2cap_chan *chan = l2cap_pi(ctrl_sock->sk)->chan; + int ret; + + ret = hidp_verify_sockets(ctrl_sock, intr_sock); + if (ret) + return ret; + + conn = NULL; + l2cap_chan_lock(chan); + if (chan->conn) { + l2cap_conn_get(chan->conn); + conn = chan->conn; } + l2cap_chan_unlock(chan); - kfree(session->rd_data); - session->rd_data = NULL; + if (!conn) + return -EBADFD; -purge: - __hidp_unlink_session(session); + ret = hidp_session_new(&session, &bt_sk(ctrl_sock->sk)->dst, ctrl_sock, + intr_sock, req, conn); + if (ret) + goto out_conn; - skb_queue_purge(&session->ctrl_transmit); - skb_queue_purge(&session->intr_transmit); + ret = l2cap_register_user(conn, &session->user); + if (ret) + goto out_session; -failed: - up_write(&hidp_session_sem); + ret = 0; - kfree(session); - return err; +out_session: + hidp_session_put(session); +out_conn: + l2cap_conn_put(conn); + return ret; } -int hidp_del_connection(struct hidp_conndel_req *req) +int hidp_connection_del(struct hidp_conndel_req *req) { struct hidp_session *session; - int err = 0; - BT_DBG(""); + session = hidp_session_find(&req->bdaddr); + if (!session) + return -ENOENT; - down_read(&hidp_session_sem); + if (req->flags & (1 << HIDP_VIRTUAL_CABLE_UNPLUG)) + hidp_send_ctrl_message(session, + HIDP_TRANS_HID_CONTROL | + HIDP_CTRL_VIRTUAL_CABLE_UNPLUG, + NULL, 0); + else + l2cap_unregister_user(session->conn, &session->user); - session = __hidp_get_session(&req->bdaddr); - if (session) { - if (req->flags & (1 << HIDP_VIRTUAL_CABLE_UNPLUG)) { - hidp_send_ctrl_message(session, - HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG, NULL, 0); - } else { - /* Flush the transmit queues */ - skb_queue_purge(&session->ctrl_transmit); - skb_queue_purge(&session->intr_transmit); - - atomic_inc(&session->terminate); - wake_up_process(session->task); - } - } else - err = -ENOENT; + hidp_session_put(session); - up_read(&hidp_session_sem); - return err; + return 0; } int hidp_get_connlist(struct hidp_connlist_req *req) @@ -1153,7 +1334,7 @@ int hidp_get_connlist(struct hidp_connlist_req *req) list_for_each_entry(session, &hidp_session_list, list) { struct hidp_conninfo ci; - __hidp_copy_session(session, &ci); + hidp_copy_session(session, &ci); if (copy_to_user(req->ci, &ci, sizeof(ci))) { err = -EFAULT; @@ -1174,18 +1355,14 @@ int hidp_get_connlist(struct hidp_connlist_req *req) int hidp_get_conninfo(struct hidp_conninfo *ci) { struct hidp_session *session; - int err = 0; - - down_read(&hidp_session_sem); - session = __hidp_get_session(&ci->bdaddr); - if (session) - __hidp_copy_session(session, ci); - else - err = -ENOENT; + session = hidp_session_find(&ci->bdaddr); + if (session) { + hidp_copy_session(session, ci); + hidp_session_put(session); + } - up_read(&hidp_session_sem); - return err; + return session ? 0 : -ENOENT; } static int __init hidp_init(void) @@ -1204,6 +1381,7 @@ module_init(hidp_init); module_exit(hidp_exit); MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); +MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>"); MODULE_DESCRIPTION("Bluetooth HIDP ver " VERSION); MODULE_VERSION(VERSION); MODULE_LICENSE("GPL"); diff --git a/net/bluetooth/hidp/hidp.h b/net/bluetooth/hidp/hidp.h index af1bcc823f26..6162ce8606ac 100644 --- a/net/bluetooth/hidp/hidp.h +++ b/net/bluetooth/hidp/hidp.h @@ -24,7 +24,9 @@ #define __HIDP_H #include <linux/types.h> +#include <linux/kref.h> #include <net/bluetooth/bluetooth.h> +#include <net/bluetooth/l2cap.h> /* HIDP header masks */ #define HIDP_HEADER_TRANS_MASK 0xf0 @@ -119,43 +121,52 @@ struct hidp_connlist_req { struct hidp_conninfo __user *ci; }; -int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock); -int hidp_del_connection(struct hidp_conndel_req *req); +int hidp_connection_add(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock); +int hidp_connection_del(struct hidp_conndel_req *req); int hidp_get_connlist(struct hidp_connlist_req *req); int hidp_get_conninfo(struct hidp_conninfo *ci); +enum hidp_session_state { + HIDP_SESSION_IDLING, + HIDP_SESSION_RUNNING, +}; + /* HIDP session defines */ struct hidp_session { struct list_head list; + struct kref ref; - struct hci_conn *conn; + /* runtime management */ + atomic_t state; + wait_queue_head_t state_queue; + atomic_t terminate; + struct task_struct *task; + unsigned long flags; + /* connection management */ + bdaddr_t bdaddr; + struct l2cap_conn *conn; + struct l2cap_user user; struct socket *ctrl_sock; struct socket *intr_sock; - - bdaddr_t bdaddr; - - unsigned long state; - unsigned long flags; - unsigned long idle_to; - + struct sk_buff_head ctrl_transmit; + struct sk_buff_head intr_transmit; uint ctrl_mtu; uint intr_mtu; + unsigned long idle_to; - atomic_t terminate; - struct task_struct *task; - - unsigned char keys[8]; - unsigned char leds; - + /* device management */ struct input_dev *input; - struct hid_device *hid; - struct timer_list timer; - struct sk_buff_head ctrl_transmit; - struct sk_buff_head intr_transmit; + /* Report descriptor */ + __u8 *rd_data; + uint rd_size; + + /* session data */ + unsigned char keys[8]; + unsigned char leds; /* Used in hidp_get_raw_report() */ int waiting_report_type; /* HIDP_DATA_RTYPE_* */ @@ -166,24 +177,8 @@ struct hidp_session { /* Used in hidp_output_raw_report() */ int output_report_success; /* boolean */ - - /* Report descriptor */ - __u8 *rd_data; - uint rd_size; - - wait_queue_head_t startup_queue; - int waiting_for_startup; }; -static inline void hidp_schedule(struct hidp_session *session) -{ - struct sock *ctrl_sk = session->ctrl_sock->sk; - struct sock *intr_sk = session->intr_sock->sk; - - wake_up_interruptible(sk_sleep(ctrl_sk)); - wake_up_interruptible(sk_sleep(intr_sk)); -} - /* HIDP init defines */ extern int __init hidp_init_sockets(void); extern void __exit hidp_cleanup_sockets(void); diff --git a/net/bluetooth/hidp/sock.c b/net/bluetooth/hidp/sock.c index 82a829d90b0f..cb3fdde1968a 100644 --- a/net/bluetooth/hidp/sock.c +++ b/net/bluetooth/hidp/sock.c @@ -77,21 +77,12 @@ static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long return err; } - if (csock->sk->sk_state != BT_CONNECTED || - isock->sk->sk_state != BT_CONNECTED) { - sockfd_put(csock); - sockfd_put(isock); - return -EBADFD; - } + err = hidp_connection_add(&ca, csock, isock); + if (!err && copy_to_user(argp, &ca, sizeof(ca))) + err = -EFAULT; - err = hidp_add_connection(&ca, csock, isock); - if (!err) { - if (copy_to_user(argp, &ca, sizeof(ca))) - err = -EFAULT; - } else { - sockfd_put(csock); - sockfd_put(isock); - } + sockfd_put(csock); + sockfd_put(isock); return err; @@ -102,7 +93,7 @@ static int hidp_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long if (copy_from_user(&cd, argp, sizeof(cd))) return -EFAULT; - return hidp_del_connection(&cd); + return hidp_connection_del(&cd); case HIDPGETCONNLIST: if (copy_from_user(&cl, argp, sizeof(cl))) @@ -284,7 +275,7 @@ int __init hidp_init_sockets(void) goto error; } - err = bt_procfs_init(THIS_MODULE, &init_net, "hidp", &hidp_sk_list, NULL); + err = bt_procfs_init(&init_net, "hidp", &hidp_sk_list, NULL); if (err < 0) { BT_ERR("Failed to create HIDP proc file"); bt_sock_unregister(BTPROTO_HIDP); @@ -296,7 +287,6 @@ int __init hidp_init_sockets(void) return 0; error: - BT_ERR("Can't register HIDP socket"); proto_unregister(&hidp_proto); return err; } @@ -304,8 +294,6 @@ error: void __exit hidp_cleanup_sockets(void) { bt_procfs_cleanup(&init_net, "hidp"); - if (bt_sock_unregister(BTPROTO_HIDP) < 0) - BT_ERR("Can't unregister HIDP socket"); - + bt_sock_unregister(BTPROTO_HIDP); proto_unregister(&hidp_proto); } diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 7c7e9321f1ea..a76d1ac0321b 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -571,7 +571,7 @@ void l2cap_chan_del(struct l2cap_chan *chan, int err) chan->conn = NULL; if (chan->chan_type != L2CAP_CHAN_CONN_FIX_A2MP) - hci_conn_put(conn->hcon); + hci_conn_drop(conn->hcon); if (mgr && mgr->bredr_chan == chan) mgr->bredr_chan = NULL; @@ -1446,6 +1446,89 @@ static void l2cap_info_timeout(struct work_struct *work) l2cap_conn_start(conn); } +/* + * l2cap_user + * External modules can register l2cap_user objects on l2cap_conn. The ->probe + * callback is called during registration. The ->remove callback is called + * during unregistration. + * An l2cap_user object can either be explicitly unregistered or when the + * underlying l2cap_conn object is deleted. This guarantees that l2cap->hcon, + * l2cap->hchan, .. are valid as long as the remove callback hasn't been called. + * External modules must own a reference to the l2cap_conn object if they intend + * to call l2cap_unregister_user(). The l2cap_conn object might get destroyed at + * any time if they don't. + */ + +int l2cap_register_user(struct l2cap_conn *conn, struct l2cap_user *user) +{ + struct hci_dev *hdev = conn->hcon->hdev; + int ret; + + /* We need to check whether l2cap_conn is registered. If it is not, we + * must not register the l2cap_user. l2cap_conn_del() is unregisters + * l2cap_conn objects, but doesn't provide its own locking. Instead, it + * relies on the parent hci_conn object to be locked. This itself relies + * on the hci_dev object to be locked. So we must lock the hci device + * here, too. */ + + hci_dev_lock(hdev); + + if (user->list.next || user->list.prev) { + ret = -EINVAL; + goto out_unlock; + } + + /* conn->hchan is NULL after l2cap_conn_del() was called */ + if (!conn->hchan) { + ret = -ENODEV; + goto out_unlock; + } + + ret = user->probe(conn, user); + if (ret) + goto out_unlock; + + list_add(&user->list, &conn->users); + ret = 0; + +out_unlock: + hci_dev_unlock(hdev); + return ret; +} +EXPORT_SYMBOL(l2cap_register_user); + +void l2cap_unregister_user(struct l2cap_conn *conn, struct l2cap_user *user) +{ + struct hci_dev *hdev = conn->hcon->hdev; + + hci_dev_lock(hdev); + + if (!user->list.next || !user->list.prev) + goto out_unlock; + + list_del(&user->list); + user->list.next = NULL; + user->list.prev = NULL; + user->remove(conn, user); + +out_unlock: + hci_dev_unlock(hdev); +} +EXPORT_SYMBOL(l2cap_unregister_user); + +static void l2cap_unregister_all_users(struct l2cap_conn *conn) +{ + struct l2cap_user *user; + + while (!list_empty(&conn->users)) { + user = list_first_entry(&conn->users, struct l2cap_user, list); + list_del(&user->list); + user->list.next = NULL; + user->list.prev = NULL; + user->remove(conn, user); + } +} + static void l2cap_conn_del(struct hci_conn *hcon, int err) { struct l2cap_conn *conn = hcon->l2cap_data; @@ -1458,6 +1541,8 @@ static void l2cap_conn_del(struct hci_conn *hcon, int err) kfree_skb(conn->rx_skb); + l2cap_unregister_all_users(conn); + mutex_lock(&conn->chan_lock); /* Kill channels */ @@ -1486,7 +1571,8 @@ static void l2cap_conn_del(struct hci_conn *hcon, int err) } hcon->l2cap_data = NULL; - kfree(conn); + conn->hchan = NULL; + l2cap_conn_put(conn); } static void security_timeout(struct work_struct *work) @@ -1502,12 +1588,12 @@ static void security_timeout(struct work_struct *work) } } -static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status) +static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon) { struct l2cap_conn *conn = hcon->l2cap_data; struct hci_chan *hchan; - if (conn || status) + if (conn) return conn; hchan = hci_chan_create(hcon); @@ -1520,8 +1606,10 @@ static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status) return NULL; } + kref_init(&conn->ref); hcon->l2cap_data = conn; conn->hcon = hcon; + hci_conn_get(conn->hcon); conn->hchan = hchan; BT_DBG("hcon %p conn %p hchan %p", hcon, conn, hchan); @@ -1547,6 +1635,7 @@ static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status) mutex_init(&conn->chan_lock); INIT_LIST_HEAD(&conn->chan_l); + INIT_LIST_HEAD(&conn->users); if (hcon->type == LE_LINK) INIT_DELAYED_WORK(&conn->security_timer, security_timeout); @@ -1558,6 +1647,26 @@ static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status) return conn; } +static void l2cap_conn_free(struct kref *ref) +{ + struct l2cap_conn *conn = container_of(ref, struct l2cap_conn, ref); + + hci_conn_put(conn->hcon); + kfree(conn); +} + +void l2cap_conn_get(struct l2cap_conn *conn) +{ + kref_get(&conn->ref); +} +EXPORT_SYMBOL(l2cap_conn_get); + +void l2cap_conn_put(struct l2cap_conn *conn) +{ + kref_put(&conn->ref, l2cap_conn_free); +} +EXPORT_SYMBOL(l2cap_conn_put); + /* ---- Socket interface ---- */ /* Find socket with psm and source / destination bdaddr. @@ -1695,9 +1804,9 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid, goto done; } - conn = l2cap_conn_add(hcon, 0); + conn = l2cap_conn_add(hcon); if (!conn) { - hci_conn_put(hcon); + hci_conn_drop(hcon); err = -ENOMEM; goto done; } @@ -1707,7 +1816,7 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid, if (!list_empty(&conn->chan_l)) { err = -EBUSY; - hci_conn_put(hcon); + hci_conn_drop(hcon); } if (err) @@ -6205,12 +6314,13 @@ drop: kfree_skb(skb); } -static void l2cap_att_channel(struct l2cap_conn *conn, u16 cid, +static void l2cap_att_channel(struct l2cap_conn *conn, struct sk_buff *skb) { struct l2cap_chan *chan; - chan = l2cap_global_chan_by_scid(0, cid, conn->src, conn->dst); + chan = l2cap_global_chan_by_scid(0, L2CAP_CID_LE_DATA, + conn->src, conn->dst); if (!chan) goto drop; @@ -6259,7 +6369,7 @@ static void l2cap_recv_frame(struct l2cap_conn *conn, struct sk_buff *skb) break; case L2CAP_CID_LE_DATA: - l2cap_att_channel(conn, cid, skb); + l2cap_att_channel(conn, skb); break; case L2CAP_CID_SMP: @@ -6313,7 +6423,7 @@ void l2cap_connect_cfm(struct hci_conn *hcon, u8 status) BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status); if (!status) { - conn = l2cap_conn_add(hcon, status); + conn = l2cap_conn_add(hcon); if (conn) l2cap_conn_ready(conn); } else { @@ -6482,7 +6592,7 @@ int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags) goto drop; if (!conn) - conn = l2cap_conn_add(hcon, 0); + conn = l2cap_conn_add(hcon); if (!conn) goto drop; diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c index 1bcfb8422fdc..36fed40c162c 100644 --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -43,6 +43,12 @@ static void l2cap_sock_init(struct sock *sk, struct sock *parent); static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio); +bool l2cap_is_socket(struct socket *sock) +{ + return sock && sock->ops == &l2cap_sock_ops; +} +EXPORT_SYMBOL(l2cap_is_socket); + static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) { struct sock *sk = sock->sk; @@ -1292,7 +1298,7 @@ int __init l2cap_init_sockets(void) goto error; } - err = bt_procfs_init(THIS_MODULE, &init_net, "l2cap", &l2cap_sk_list, + err = bt_procfs_init(&init_net, "l2cap", &l2cap_sk_list, NULL); if (err < 0) { BT_ERR("Failed to create L2CAP proc file"); @@ -1312,8 +1318,6 @@ error: void l2cap_cleanup_sockets(void) { bt_procfs_cleanup(&init_net, "l2cap"); - if (bt_sock_unregister(BTPROTO_L2CAP) < 0) - BT_ERR("L2CAP socket unregistration failed"); - + bt_sock_unregister(BTPROTO_L2CAP); proto_unregister(&l2cap_proto); } diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 39395c7144aa..35fef22703e9 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -106,11 +106,10 @@ static const u16 mgmt_events[] = { * These LE scan and inquiry parameters were chosen according to LE General * Discovery Procedure specification. */ -#define LE_SCAN_TYPE 0x01 #define LE_SCAN_WIN 0x12 #define LE_SCAN_INT 0x12 -#define LE_SCAN_TIMEOUT_LE_ONLY 10240 /* TGAP(gen_disc_scan_min) */ -#define LE_SCAN_TIMEOUT_BREDR_LE 5120 /* TGAP(100)/2 */ +#define LE_SCAN_TIMEOUT_LE_ONLY msecs_to_jiffies(10240) +#define LE_SCAN_TIMEOUT_BREDR_LE msecs_to_jiffies(5120) #define INQUIRY_LEN_BREDR 0x08 /* TGAP(100) */ #define INQUIRY_LEN_BREDR_LE 0x04 /* TGAP(100)/2 */ @@ -384,7 +383,8 @@ static u32 get_supported_settings(struct hci_dev *hdev) if (lmp_bredr_capable(hdev)) { settings |= MGMT_SETTING_CONNECTABLE; - settings |= MGMT_SETTING_FAST_CONNECTABLE; + if (hdev->hci_ver >= BLUETOOTH_VER_1_2) + settings |= MGMT_SETTING_FAST_CONNECTABLE; settings |= MGMT_SETTING_DISCOVERABLE; settings |= MGMT_SETTING_BREDR; settings |= MGMT_SETTING_LINK_SECURITY; @@ -409,6 +409,9 @@ static u32 get_current_settings(struct hci_dev *hdev) if (test_bit(HCI_CONNECTABLE, &hdev->dev_flags)) settings |= MGMT_SETTING_CONNECTABLE; + if (test_bit(HCI_FAST_CONNECTABLE, &hdev->dev_flags)) + settings |= MGMT_SETTING_FAST_CONNECTABLE; + if (test_bit(HCI_DISCOVERABLE, &hdev->dev_flags)) settings |= MGMT_SETTING_DISCOVERABLE; @@ -591,32 +594,33 @@ static void create_eir(struct hci_dev *hdev, u8 *data) ptr = create_uuid128_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data)); } -static int update_eir(struct hci_dev *hdev) +static void update_eir(struct hci_request *req) { + struct hci_dev *hdev = req->hdev; struct hci_cp_write_eir cp; if (!hdev_is_powered(hdev)) - return 0; + return; if (!lmp_ext_inq_capable(hdev)) - return 0; + return; if (!test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) - return 0; + return; if (test_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) - return 0; + return; memset(&cp, 0, sizeof(cp)); create_eir(hdev, cp.data); if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0) - return 0; + return; memcpy(hdev->eir, cp.data, sizeof(cp.data)); - return hci_send_cmd(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp); + hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); } static u8 get_service_classes(struct hci_dev *hdev) @@ -630,47 +634,48 @@ static u8 get_service_classes(struct hci_dev *hdev) return val; } -static int update_class(struct hci_dev *hdev) +static void update_class(struct hci_request *req) { + struct hci_dev *hdev = req->hdev; u8 cod[3]; - int err; BT_DBG("%s", hdev->name); if (!hdev_is_powered(hdev)) - return 0; + return; if (test_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) - return 0; + return; cod[0] = hdev->minor_class; cod[1] = hdev->major_class; cod[2] = get_service_classes(hdev); if (memcmp(cod, hdev->dev_class, 3) == 0) - return 0; - - err = hci_send_cmd(hdev, HCI_OP_WRITE_CLASS_OF_DEV, sizeof(cod), cod); - if (err == 0) - set_bit(HCI_PENDING_CLASS, &hdev->dev_flags); + return; - return err; + hci_req_add(req, HCI_OP_WRITE_CLASS_OF_DEV, sizeof(cod), cod); } static void service_cache_off(struct work_struct *work) { struct hci_dev *hdev = container_of(work, struct hci_dev, service_cache.work); + struct hci_request req; if (!test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) return; + hci_req_init(&req, hdev); + hci_dev_lock(hdev); - update_eir(hdev); - update_class(hdev); + update_eir(&req); + update_class(&req); hci_dev_unlock(hdev); + + hci_req_run(&req, NULL); } static void mgmt_init_hdev(struct sock *sk, struct hci_dev *hdev) @@ -994,11 +999,64 @@ failed: return err; } +static void write_fast_connectable(struct hci_request *req, bool enable) +{ + struct hci_dev *hdev = req->hdev; + struct hci_cp_write_page_scan_activity acp; + u8 type; + + if (hdev->hci_ver < BLUETOOTH_VER_1_2) + return; + + if (enable) { + type = PAGE_SCAN_TYPE_INTERLACED; + + /* 160 msec page scan interval */ + acp.interval = __constant_cpu_to_le16(0x0100); + } else { + type = PAGE_SCAN_TYPE_STANDARD; /* default */ + + /* default 1.28 sec page scan */ + acp.interval = __constant_cpu_to_le16(0x0800); + } + + acp.window = __constant_cpu_to_le16(0x0012); + + if (__cpu_to_le16(hdev->page_scan_interval) != acp.interval || + __cpu_to_le16(hdev->page_scan_window) != acp.window) + hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, + sizeof(acp), &acp); + + if (hdev->page_scan_type != type) + hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type); +} + +static void set_connectable_complete(struct hci_dev *hdev, u8 status) +{ + struct pending_cmd *cmd; + + BT_DBG("status 0x%02x", status); + + hci_dev_lock(hdev); + + cmd = mgmt_pending_find(MGMT_OP_SET_CONNECTABLE, hdev); + if (!cmd) + goto unlock; + + send_settings_rsp(cmd->sk, MGMT_OP_SET_CONNECTABLE, hdev); + + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + static int set_connectable(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) { struct mgmt_mode *cp = data; struct pending_cmd *cmd; + struct hci_request req; u8 scan; int err; @@ -1065,7 +1123,20 @@ static int set_connectable(struct sock *sk, struct hci_dev *hdev, void *data, cancel_delayed_work(&hdev->discov_off); } - err = hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); + hci_req_init(&req, hdev); + + hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); + + /* If we're going from non-connectable to connectable or + * vice-versa when fast connectable is enabled ensure that fast + * connectable gets disabled. write_fast_connectable won't do + * anything if the page scan parameters are already what they + * should be. + */ + if (cp->val || test_bit(HCI_FAST_CONNECTABLE, &hdev->dev_flags)) + write_fast_connectable(&req, false); + + err = hci_req_run(&req, set_connectable_complete); if (err < 0) mgmt_pending_remove(cmd); @@ -1280,6 +1351,11 @@ static int set_le(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) return cmd_status(sk, hdev->id, MGMT_OP_SET_LE, MGMT_STATUS_INVALID_PARAMS); + /* LE-only devices do not allow toggling LE on/off */ + if (!lmp_bredr_capable(hdev)) + return cmd_status(sk, hdev->id, MGMT_OP_SET_LE, + MGMT_STATUS_REJECTED); + hci_dev_lock(hdev); val = !!cp->val; @@ -1332,6 +1408,29 @@ unlock: return err; } +/* This is a helper function to test for pending mgmt commands that can + * cause CoD or EIR HCI commands. We can only allow one such pending + * mgmt command at a time since otherwise we cannot easily track what + * the current values are, will be, and based on that calculate if a new + * HCI command needs to be sent and if yes with what value. + */ +static bool pending_eir_or_class(struct hci_dev *hdev) +{ + struct pending_cmd *cmd; + + list_for_each_entry(cmd, &hdev->mgmt_pending, list) { + switch (cmd->opcode) { + case MGMT_OP_ADD_UUID: + case MGMT_OP_REMOVE_UUID: + case MGMT_OP_SET_DEV_CLASS: + case MGMT_OP_SET_POWERED: + return true; + } + } + + return false; +} + static const u8 bluetooth_base_uuid[] = { 0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, @@ -1351,10 +1450,37 @@ static u8 get_uuid_size(const u8 *uuid) return 16; } +static void mgmt_class_complete(struct hci_dev *hdev, u16 mgmt_op, u8 status) +{ + struct pending_cmd *cmd; + + hci_dev_lock(hdev); + + cmd = mgmt_pending_find(mgmt_op, hdev); + if (!cmd) + goto unlock; + + cmd_complete(cmd->sk, cmd->index, cmd->opcode, mgmt_status(status), + hdev->dev_class, 3); + + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + +static void add_uuid_complete(struct hci_dev *hdev, u8 status) +{ + BT_DBG("status 0x%02x", status); + + mgmt_class_complete(hdev, MGMT_OP_ADD_UUID, status); +} + static int add_uuid(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) { struct mgmt_cp_add_uuid *cp = data; struct pending_cmd *cmd; + struct hci_request req; struct bt_uuid *uuid; int err; @@ -1362,7 +1488,7 @@ static int add_uuid(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) hci_dev_lock(hdev); - if (test_bit(HCI_PENDING_CLASS, &hdev->dev_flags)) { + if (pending_eir_or_class(hdev)) { err = cmd_status(sk, hdev->id, MGMT_OP_ADD_UUID, MGMT_STATUS_BUSY); goto failed; @@ -1380,23 +1506,28 @@ static int add_uuid(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) list_add_tail(&uuid->list, &hdev->uuids); - err = update_class(hdev); - if (err < 0) - goto failed; + hci_req_init(&req, hdev); - err = update_eir(hdev); - if (err < 0) - goto failed; + update_class(&req); + update_eir(&req); + + err = hci_req_run(&req, add_uuid_complete); + if (err < 0) { + if (err != -ENODATA) + goto failed; - if (!test_bit(HCI_PENDING_CLASS, &hdev->dev_flags)) { err = cmd_complete(sk, hdev->id, MGMT_OP_ADD_UUID, 0, hdev->dev_class, 3); goto failed; } cmd = mgmt_pending_add(sk, MGMT_OP_ADD_UUID, hdev, data, len); - if (!cmd) + if (!cmd) { err = -ENOMEM; + goto failed; + } + + err = 0; failed: hci_dev_unlock(hdev); @@ -1417,6 +1548,13 @@ static bool enable_service_cache(struct hci_dev *hdev) return false; } +static void remove_uuid_complete(struct hci_dev *hdev, u8 status) +{ + BT_DBG("status 0x%02x", status); + + mgmt_class_complete(hdev, MGMT_OP_REMOVE_UUID, status); +} + static int remove_uuid(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) { @@ -1424,13 +1562,14 @@ static int remove_uuid(struct sock *sk, struct hci_dev *hdev, void *data, struct pending_cmd *cmd; struct bt_uuid *match, *tmp; u8 bt_uuid_any[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; + struct hci_request req; int err, found; BT_DBG("request for %s", hdev->name); hci_dev_lock(hdev); - if (test_bit(HCI_PENDING_CLASS, &hdev->dev_flags)) { + if (pending_eir_or_class(hdev)) { err = cmd_status(sk, hdev->id, MGMT_OP_REMOVE_UUID, MGMT_STATUS_BUSY); goto unlock; @@ -1466,34 +1605,47 @@ static int remove_uuid(struct sock *sk, struct hci_dev *hdev, void *data, } update_class: - err = update_class(hdev); - if (err < 0) - goto unlock; + hci_req_init(&req, hdev); - err = update_eir(hdev); - if (err < 0) - goto unlock; + update_class(&req); + update_eir(&req); + + err = hci_req_run(&req, remove_uuid_complete); + if (err < 0) { + if (err != -ENODATA) + goto unlock; - if (!test_bit(HCI_PENDING_CLASS, &hdev->dev_flags)) { err = cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_UUID, 0, hdev->dev_class, 3); goto unlock; } cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_UUID, hdev, data, len); - if (!cmd) + if (!cmd) { err = -ENOMEM; + goto unlock; + } + + err = 0; unlock: hci_dev_unlock(hdev); return err; } +static void set_class_complete(struct hci_dev *hdev, u8 status) +{ + BT_DBG("status 0x%02x", status); + + mgmt_class_complete(hdev, MGMT_OP_SET_DEV_CLASS, status); +} + static int set_dev_class(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) { struct mgmt_cp_set_dev_class *cp = data; struct pending_cmd *cmd; + struct hci_request req; int err; BT_DBG("request for %s", hdev->name); @@ -1502,15 +1654,19 @@ static int set_dev_class(struct sock *sk, struct hci_dev *hdev, void *data, return cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, MGMT_STATUS_NOT_SUPPORTED); - if (test_bit(HCI_PENDING_CLASS, &hdev->dev_flags)) - return cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, - MGMT_STATUS_BUSY); + hci_dev_lock(hdev); - if ((cp->minor & 0x03) != 0 || (cp->major & 0xe0) != 0) - return cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, - MGMT_STATUS_INVALID_PARAMS); + if (pending_eir_or_class(hdev)) { + err = cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, + MGMT_STATUS_BUSY); + goto unlock; + } - hci_dev_lock(hdev); + if ((cp->minor & 0x03) != 0 || (cp->major & 0xe0) != 0) { + err = cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, + MGMT_STATUS_INVALID_PARAMS); + goto unlock; + } hdev->major_class = cp->major; hdev->minor_class = cp->minor; @@ -1521,26 +1677,34 @@ static int set_dev_class(struct sock *sk, struct hci_dev *hdev, void *data, goto unlock; } + hci_req_init(&req, hdev); + if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) { hci_dev_unlock(hdev); cancel_delayed_work_sync(&hdev->service_cache); hci_dev_lock(hdev); - update_eir(hdev); + update_eir(&req); } - err = update_class(hdev); - if (err < 0) - goto unlock; + update_class(&req); + + err = hci_req_run(&req, set_class_complete); + if (err < 0) { + if (err != -ENODATA) + goto unlock; - if (!test_bit(HCI_PENDING_CLASS, &hdev->dev_flags)) { err = cmd_complete(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 0, hdev->dev_class, 3); goto unlock; } cmd = mgmt_pending_add(sk, MGMT_OP_SET_DEV_CLASS, hdev, data, len); - if (!cmd) + if (!cmd) { err = -ENOMEM; + goto unlock; + } + + err = 0; unlock: hci_dev_unlock(hdev); @@ -1971,7 +2135,7 @@ static void pairing_complete(struct pending_cmd *cmd, u8 status) conn->security_cfm_cb = NULL; conn->disconn_cfm_cb = NULL; - hci_conn_put(conn); + hci_conn_drop(conn); mgmt_pending_remove(cmd); } @@ -2062,7 +2226,7 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data, } if (conn->connect_cfm_cb) { - hci_conn_put(conn); + hci_conn_drop(conn); err = cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, MGMT_STATUS_BUSY, &rp, sizeof(rp)); goto unlock; @@ -2071,7 +2235,7 @@ static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data, cmd = mgmt_pending_add(sk, MGMT_OP_PAIR_DEVICE, hdev, data, len); if (!cmd) { err = -ENOMEM; - hci_conn_put(conn); + hci_conn_drop(conn); goto unlock; } @@ -2140,7 +2304,7 @@ unlock: } static int user_pairing_resp(struct sock *sk, struct hci_dev *hdev, - bdaddr_t *bdaddr, u8 type, u16 mgmt_op, + struct mgmt_addr_info *addr, u16 mgmt_op, u16 hci_op, __le32 passkey) { struct pending_cmd *cmd; @@ -2150,37 +2314,41 @@ static int user_pairing_resp(struct sock *sk, struct hci_dev *hdev, hci_dev_lock(hdev); if (!hdev_is_powered(hdev)) { - err = cmd_status(sk, hdev->id, mgmt_op, - MGMT_STATUS_NOT_POWERED); + err = cmd_complete(sk, hdev->id, mgmt_op, + MGMT_STATUS_NOT_POWERED, addr, + sizeof(*addr)); goto done; } - if (type == BDADDR_BREDR) - conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, bdaddr); + if (addr->type == BDADDR_BREDR) + conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &addr->bdaddr); else - conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); + conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &addr->bdaddr); if (!conn) { - err = cmd_status(sk, hdev->id, mgmt_op, - MGMT_STATUS_NOT_CONNECTED); + err = cmd_complete(sk, hdev->id, mgmt_op, + MGMT_STATUS_NOT_CONNECTED, addr, + sizeof(*addr)); goto done; } - if (type == BDADDR_LE_PUBLIC || type == BDADDR_LE_RANDOM) { + if (addr->type == BDADDR_LE_PUBLIC || addr->type == BDADDR_LE_RANDOM) { /* Continue with pairing via SMP */ err = smp_user_confirm_reply(conn, mgmt_op, passkey); if (!err) - err = cmd_status(sk, hdev->id, mgmt_op, - MGMT_STATUS_SUCCESS); + err = cmd_complete(sk, hdev->id, mgmt_op, + MGMT_STATUS_SUCCESS, addr, + sizeof(*addr)); else - err = cmd_status(sk, hdev->id, mgmt_op, - MGMT_STATUS_FAILED); + err = cmd_complete(sk, hdev->id, mgmt_op, + MGMT_STATUS_FAILED, addr, + sizeof(*addr)); goto done; } - cmd = mgmt_pending_add(sk, mgmt_op, hdev, bdaddr, sizeof(*bdaddr)); + cmd = mgmt_pending_add(sk, mgmt_op, hdev, addr, sizeof(*addr)); if (!cmd) { err = -ENOMEM; goto done; @@ -2190,11 +2358,12 @@ static int user_pairing_resp(struct sock *sk, struct hci_dev *hdev, if (hci_op == HCI_OP_USER_PASSKEY_REPLY) { struct hci_cp_user_passkey_reply cp; - bacpy(&cp.bdaddr, bdaddr); + bacpy(&cp.bdaddr, &addr->bdaddr); cp.passkey = passkey; err = hci_send_cmd(hdev, hci_op, sizeof(cp), &cp); } else - err = hci_send_cmd(hdev, hci_op, sizeof(*bdaddr), bdaddr); + err = hci_send_cmd(hdev, hci_op, sizeof(addr->bdaddr), + &addr->bdaddr); if (err < 0) mgmt_pending_remove(cmd); @@ -2211,7 +2380,7 @@ static int pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev, BT_DBG(""); - return user_pairing_resp(sk, hdev, &cp->addr.bdaddr, cp->addr.type, + return user_pairing_resp(sk, hdev, &cp->addr, MGMT_OP_PIN_CODE_NEG_REPLY, HCI_OP_PIN_CODE_NEG_REPLY, 0); } @@ -2227,7 +2396,7 @@ static int user_confirm_reply(struct sock *sk, struct hci_dev *hdev, void *data, return cmd_status(sk, hdev->id, MGMT_OP_USER_CONFIRM_REPLY, MGMT_STATUS_INVALID_PARAMS); - return user_pairing_resp(sk, hdev, &cp->addr.bdaddr, cp->addr.type, + return user_pairing_resp(sk, hdev, &cp->addr, MGMT_OP_USER_CONFIRM_REPLY, HCI_OP_USER_CONFIRM_REPLY, 0); } @@ -2239,7 +2408,7 @@ static int user_confirm_neg_reply(struct sock *sk, struct hci_dev *hdev, BT_DBG(""); - return user_pairing_resp(sk, hdev, &cp->addr.bdaddr, cp->addr.type, + return user_pairing_resp(sk, hdev, &cp->addr, MGMT_OP_USER_CONFIRM_NEG_REPLY, HCI_OP_USER_CONFIRM_NEG_REPLY, 0); } @@ -2251,7 +2420,7 @@ static int user_passkey_reply(struct sock *sk, struct hci_dev *hdev, void *data, BT_DBG(""); - return user_pairing_resp(sk, hdev, &cp->addr.bdaddr, cp->addr.type, + return user_pairing_resp(sk, hdev, &cp->addr, MGMT_OP_USER_PASSKEY_REPLY, HCI_OP_USER_PASSKEY_REPLY, cp->passkey); } @@ -2263,18 +2432,47 @@ static int user_passkey_neg_reply(struct sock *sk, struct hci_dev *hdev, BT_DBG(""); - return user_pairing_resp(sk, hdev, &cp->addr.bdaddr, cp->addr.type, + return user_pairing_resp(sk, hdev, &cp->addr, MGMT_OP_USER_PASSKEY_NEG_REPLY, HCI_OP_USER_PASSKEY_NEG_REPLY, 0); } -static int update_name(struct hci_dev *hdev, const char *name) +static void update_name(struct hci_request *req) { + struct hci_dev *hdev = req->hdev; struct hci_cp_write_local_name cp; - memcpy(cp.name, name, sizeof(cp.name)); + memcpy(cp.name, hdev->dev_name, sizeof(cp.name)); + + hci_req_add(req, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp); +} + +static void set_name_complete(struct hci_dev *hdev, u8 status) +{ + struct mgmt_cp_set_local_name *cp; + struct pending_cmd *cmd; + + BT_DBG("status 0x%02x", status); + + hci_dev_lock(hdev); - return hci_send_cmd(hdev, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp); + cmd = mgmt_pending_find(MGMT_OP_SET_LOCAL_NAME, hdev); + if (!cmd) + goto unlock; + + cp = cmd->param; + + if (status) + cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, + mgmt_status(status)); + else + cmd_complete(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0, + cp, sizeof(*cp)); + + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); } static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data, @@ -2282,12 +2480,24 @@ static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data, { struct mgmt_cp_set_local_name *cp = data; struct pending_cmd *cmd; + struct hci_request req; int err; BT_DBG(""); hci_dev_lock(hdev); + /* If the old values are the same as the new ones just return a + * direct command complete event. + */ + if (!memcmp(hdev->dev_name, cp->name, sizeof(hdev->dev_name)) && + !memcmp(hdev->short_name, cp->short_name, + sizeof(hdev->short_name))) { + err = cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0, + data, len); + goto failed; + } + memcpy(hdev->short_name, cp->short_name, sizeof(hdev->short_name)); if (!hdev_is_powered(hdev)) { @@ -2310,7 +2520,19 @@ static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data, goto failed; } - err = update_name(hdev, cp->name); + memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name)); + + hci_req_init(&req, hdev); + + if (lmp_bredr_capable(hdev)) { + update_name(&req); + update_eir(&req); + } + + if (lmp_le_capable(hdev)) + hci_update_ad(&req); + + err = hci_req_run(&req, set_name_complete); if (err < 0) mgmt_pending_remove(cmd); @@ -2485,7 +2707,7 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev, goto failed; } - err = hci_le_scan(hdev, LE_SCAN_TYPE, LE_SCAN_INT, + err = hci_le_scan(hdev, LE_SCAN_ACTIVE, LE_SCAN_INT, LE_SCAN_WIN, LE_SCAN_TIMEOUT_LE_ONLY); break; @@ -2497,8 +2719,8 @@ static int start_discovery(struct sock *sk, struct hci_dev *hdev, goto failed; } - err = hci_le_scan(hdev, LE_SCAN_TYPE, LE_SCAN_INT, LE_SCAN_WIN, - LE_SCAN_TIMEOUT_BREDR_LE); + err = hci_le_scan(hdev, LE_SCAN_ACTIVE, LE_SCAN_INT, + LE_SCAN_WIN, LE_SCAN_TIMEOUT_BREDR_LE); break; default: @@ -2698,6 +2920,7 @@ static int set_device_id(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) { struct mgmt_cp_set_device_id *cp = data; + struct hci_request req; int err; __u16 source; @@ -2718,24 +2941,59 @@ static int set_device_id(struct sock *sk, struct hci_dev *hdev, void *data, err = cmd_complete(sk, hdev->id, MGMT_OP_SET_DEVICE_ID, 0, NULL, 0); - update_eir(hdev); + hci_req_init(&req, hdev); + update_eir(&req); + hci_req_run(&req, NULL); hci_dev_unlock(hdev); return err; } +static void fast_connectable_complete(struct hci_dev *hdev, u8 status) +{ + struct pending_cmd *cmd; + + BT_DBG("status 0x%02x", status); + + hci_dev_lock(hdev); + + cmd = mgmt_pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev); + if (!cmd) + goto unlock; + + if (status) { + cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, + mgmt_status(status)); + } else { + struct mgmt_mode *cp = cmd->param; + + if (cp->val) + set_bit(HCI_FAST_CONNECTABLE, &hdev->dev_flags); + else + clear_bit(HCI_FAST_CONNECTABLE, &hdev->dev_flags); + + send_settings_rsp(cmd->sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev); + new_settings(hdev, cmd->sk); + } + + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + static int set_fast_connectable(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) { struct mgmt_mode *cp = data; - struct hci_cp_write_page_scan_activity acp; - u8 type; + struct pending_cmd *cmd; + struct hci_request req; int err; BT_DBG("%s", hdev->name); - if (!lmp_bredr_capable(hdev)) + if (!lmp_bredr_capable(hdev) || hdev->hci_ver < BLUETOOTH_VER_1_2) return cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, MGMT_STATUS_NOT_SUPPORTED); @@ -2753,40 +3011,39 @@ static int set_fast_connectable(struct sock *sk, struct hci_dev *hdev, hci_dev_lock(hdev); - if (cp->val) { - type = PAGE_SCAN_TYPE_INTERLACED; + if (mgmt_pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev)) { + err = cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, + MGMT_STATUS_BUSY); + goto unlock; + } - /* 160 msec page scan interval */ - acp.interval = __constant_cpu_to_le16(0x0100); - } else { - type = PAGE_SCAN_TYPE_STANDARD; /* default */ + if (!!cp->val == test_bit(HCI_FAST_CONNECTABLE, &hdev->dev_flags)) { + err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE, + hdev); + goto unlock; + } - /* default 1.28 sec page scan */ - acp.interval = __constant_cpu_to_le16(0x0800); + cmd = mgmt_pending_add(sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev, + data, len); + if (!cmd) { + err = -ENOMEM; + goto unlock; } - /* default 11.25 msec page scan window */ - acp.window = __constant_cpu_to_le16(0x0012); + hci_req_init(&req, hdev); - err = hci_send_cmd(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, sizeof(acp), - &acp); - if (err < 0) { - err = cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, - MGMT_STATUS_FAILED); - goto done; - } + write_fast_connectable(&req, cp->val); - err = hci_send_cmd(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type); + err = hci_req_run(&req, fast_connectable_complete); if (err < 0) { err = cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, MGMT_STATUS_FAILED); - goto done; + mgmt_pending_remove(cmd); } - err = cmd_complete(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, 0, - NULL, 0); -done: +unlock: hci_dev_unlock(hdev); + return err; } @@ -3043,79 +3300,116 @@ static void settings_rsp(struct pending_cmd *cmd, void *data) mgmt_pending_free(cmd); } -static int set_bredr_scan(struct hci_dev *hdev) +static void set_bredr_scan(struct hci_request *req) { + struct hci_dev *hdev = req->hdev; u8 scan = 0; + /* Ensure that fast connectable is disabled. This function will + * not do anything if the page scan parameters are already what + * they should be. + */ + write_fast_connectable(req, false); + if (test_bit(HCI_CONNECTABLE, &hdev->dev_flags)) scan |= SCAN_PAGE; if (test_bit(HCI_DISCOVERABLE, &hdev->dev_flags)) scan |= SCAN_INQUIRY; - if (!scan) - return 0; - - return hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); + if (scan) + hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); } -int mgmt_powered(struct hci_dev *hdev, u8 powered) +static void powered_complete(struct hci_dev *hdev, u8 status) { struct cmd_lookup match = { NULL, hdev }; - int err; - if (!test_bit(HCI_MGMT, &hdev->dev_flags)) - return 0; + BT_DBG("status 0x%02x", status); + + hci_dev_lock(hdev); mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match); - if (powered) { - u8 link_sec; + new_settings(hdev, match.sk); - if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) && - !lmp_host_ssp_capable(hdev)) { - u8 ssp = 1; + hci_dev_unlock(hdev); - hci_send_cmd(hdev, HCI_OP_WRITE_SSP_MODE, 1, &ssp); - } + if (match.sk) + sock_put(match.sk); +} + +static int powered_update_hci(struct hci_dev *hdev) +{ + struct hci_request req; + u8 link_sec; - if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { - struct hci_cp_write_le_host_supported cp; + hci_req_init(&req, hdev); - cp.le = 1; - cp.simul = lmp_le_br_capable(hdev); + if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) && + !lmp_host_ssp_capable(hdev)) { + u8 ssp = 1; - /* Check first if we already have the right - * host state (host features set) - */ - if (cp.le != lmp_host_le_capable(hdev) || - cp.simul != lmp_host_le_br_capable(hdev)) - hci_send_cmd(hdev, - HCI_OP_WRITE_LE_HOST_SUPPORTED, - sizeof(cp), &cp); - } + hci_req_add(&req, HCI_OP_WRITE_SSP_MODE, 1, &ssp); + } - link_sec = test_bit(HCI_LINK_SECURITY, &hdev->dev_flags); - if (link_sec != test_bit(HCI_AUTH, &hdev->flags)) - hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, - sizeof(link_sec), &link_sec); + if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags) && + lmp_bredr_capable(hdev)) { + struct hci_cp_write_le_host_supported cp; - if (lmp_bredr_capable(hdev)) { - set_bredr_scan(hdev); - update_class(hdev); - update_name(hdev, hdev->dev_name); - update_eir(hdev); - } - } else { - u8 status = MGMT_STATUS_NOT_POWERED; - u8 zero_cod[] = { 0, 0, 0 }; + cp.le = 1; + cp.simul = lmp_le_br_capable(hdev); - mgmt_pending_foreach(0, hdev, cmd_status_rsp, &status); + /* Check first if we already have the right + * host state (host features set) + */ + if (cp.le != lmp_host_le_capable(hdev) || + cp.simul != lmp_host_le_br_capable(hdev)) + hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED, + sizeof(cp), &cp); + } + + link_sec = test_bit(HCI_LINK_SECURITY, &hdev->dev_flags); + if (link_sec != test_bit(HCI_AUTH, &hdev->flags)) + hci_req_add(&req, HCI_OP_WRITE_AUTH_ENABLE, + sizeof(link_sec), &link_sec); - if (memcmp(hdev->dev_class, zero_cod, sizeof(zero_cod)) != 0) - mgmt_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev, - zero_cod, sizeof(zero_cod), NULL); + if (lmp_bredr_capable(hdev)) { + set_bredr_scan(&req); + update_class(&req); + update_name(&req); + update_eir(&req); } + return hci_req_run(&req, powered_complete); +} + +int mgmt_powered(struct hci_dev *hdev, u8 powered) +{ + struct cmd_lookup match = { NULL, hdev }; + u8 status_not_powered = MGMT_STATUS_NOT_POWERED; + u8 zero_cod[] = { 0, 0, 0 }; + int err; + + if (!test_bit(HCI_MGMT, &hdev->dev_flags)) + return 0; + + if (powered) { + if (powered_update_hci(hdev) == 0) + return 0; + + mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, + &match); + goto new_settings; + } + + mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match); + mgmt_pending_foreach(0, hdev, cmd_status_rsp, &status_not_powered); + + if (memcmp(hdev->dev_class, zero_cod, sizeof(zero_cod)) != 0) + mgmt_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev, + zero_cod, sizeof(zero_cod), NULL); + +new_settings: err = new_settings(hdev, match.sk); if (match.sk) @@ -3152,7 +3446,7 @@ int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable) int mgmt_connectable(struct hci_dev *hdev, u8 connectable) { - struct cmd_lookup match = { NULL, hdev }; + struct pending_cmd *cmd; bool changed = false; int err = 0; @@ -3164,14 +3458,10 @@ int mgmt_connectable(struct hci_dev *hdev, u8 connectable) changed = true; } - mgmt_pending_foreach(MGMT_OP_SET_CONNECTABLE, hdev, settings_rsp, - &match); + cmd = mgmt_pending_find(MGMT_OP_SET_CONNECTABLE, hdev); if (changed) - err = new_settings(hdev, match.sk); - - if (match.sk) - sock_put(match.sk); + err = new_settings(hdev, cmd ? cmd->sk : NULL); return err; } @@ -3555,23 +3845,25 @@ int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status) return err; } -static int clear_eir(struct hci_dev *hdev) +static void clear_eir(struct hci_request *req) { + struct hci_dev *hdev = req->hdev; struct hci_cp_write_eir cp; if (!lmp_ext_inq_capable(hdev)) - return 0; + return; memset(hdev->eir, 0, sizeof(hdev->eir)); memset(&cp, 0, sizeof(cp)); - return hci_send_cmd(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp); + hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); } int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status) { struct cmd_lookup match = { NULL, hdev }; + struct hci_request req; bool changed = false; int err = 0; @@ -3604,29 +3896,26 @@ int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status) if (match.sk) sock_put(match.sk); + hci_req_init(&req, hdev); + if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) - update_eir(hdev); + update_eir(&req); else - clear_eir(hdev); + clear_eir(&req); + + hci_req_run(&req, NULL); return err; } -static void class_rsp(struct pending_cmd *cmd, void *data) +static void sk_lookup(struct pending_cmd *cmd, void *data) { struct cmd_lookup *match = data; - cmd_complete(cmd->sk, cmd->index, cmd->opcode, match->mgmt_status, - match->hdev->dev_class, 3); - - list_del(&cmd->list); - if (match->sk == NULL) { match->sk = cmd->sk; sock_hold(match->sk); } - - mgmt_pending_free(cmd); } int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, @@ -3635,11 +3924,9 @@ int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, struct cmd_lookup match = { NULL, hdev, mgmt_status(status) }; int err = 0; - clear_bit(HCI_PENDING_CLASS, &hdev->dev_flags); - - mgmt_pending_foreach(MGMT_OP_SET_DEV_CLASS, hdev, class_rsp, &match); - mgmt_pending_foreach(MGMT_OP_ADD_UUID, hdev, class_rsp, &match); - mgmt_pending_foreach(MGMT_OP_REMOVE_UUID, hdev, class_rsp, &match); + mgmt_pending_foreach(MGMT_OP_SET_DEV_CLASS, hdev, sk_lookup, &match); + mgmt_pending_foreach(MGMT_OP_ADD_UUID, hdev, sk_lookup, &match); + mgmt_pending_foreach(MGMT_OP_REMOVE_UUID, hdev, sk_lookup, &match); if (!status) err = mgmt_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev, dev_class, @@ -3653,55 +3940,29 @@ int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status) { - struct pending_cmd *cmd; struct mgmt_cp_set_local_name ev; - bool changed = false; - int err = 0; + struct pending_cmd *cmd; - if (memcmp(name, hdev->dev_name, sizeof(hdev->dev_name)) != 0) { - memcpy(hdev->dev_name, name, sizeof(hdev->dev_name)); - changed = true; - } + if (status) + return 0; memset(&ev, 0, sizeof(ev)); memcpy(ev.name, name, HCI_MAX_NAME_LENGTH); memcpy(ev.short_name, hdev->short_name, HCI_MAX_SHORT_NAME_LENGTH); cmd = mgmt_pending_find(MGMT_OP_SET_LOCAL_NAME, hdev); - if (!cmd) - goto send_event; - - /* Always assume that either the short or the complete name has - * changed if there was a pending mgmt command */ - changed = true; + if (!cmd) { + memcpy(hdev->dev_name, name, sizeof(hdev->dev_name)); - if (status) { - err = cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, - mgmt_status(status)); - goto failed; + /* If this is a HCI command related to powering on the + * HCI dev don't send any mgmt signals. + */ + if (mgmt_pending_find(MGMT_OP_SET_POWERED, hdev)) + return 0; } - err = cmd_complete(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0, &ev, - sizeof(ev)); - if (err < 0) - goto failed; - -send_event: - if (changed) - err = mgmt_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, &ev, - sizeof(ev), cmd ? cmd->sk : NULL); - - /* EIR is taken care of separately when powering on the - * adapter so only update them here if this is a name change - * unrelated to power on. - */ - if (!test_bit(HCI_INIT, &hdev->flags)) - update_eir(hdev); - -failed: - if (cmd) - mgmt_pending_remove(cmd); - return err; + return mgmt_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, &ev, sizeof(ev), + cmd ? cmd->sk : NULL); } int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash, diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c index b23e2713fea8..ca957d34b0c8 100644 --- a/net/bluetooth/rfcomm/core.c +++ b/net/bluetooth/rfcomm/core.c @@ -69,7 +69,7 @@ static struct rfcomm_session *rfcomm_session_create(bdaddr_t *src, u8 sec_level, int *err); static struct rfcomm_session *rfcomm_session_get(bdaddr_t *src, bdaddr_t *dst); -static void rfcomm_session_del(struct rfcomm_session *s); +static struct rfcomm_session *rfcomm_session_del(struct rfcomm_session *s); /* ---- RFCOMM frame parsing macros ---- */ #define __get_dlci(b) ((b & 0xfc) >> 2) @@ -108,12 +108,6 @@ static void rfcomm_schedule(void) wake_up_process(rfcomm_thread); } -static void rfcomm_session_put(struct rfcomm_session *s) -{ - if (atomic_dec_and_test(&s->refcnt)) - rfcomm_session_del(s); -} - /* ---- RFCOMM FCS computation ---- */ /* reversed, 8-bit, poly=0x07 */ @@ -249,16 +243,14 @@ static void rfcomm_session_set_timer(struct rfcomm_session *s, long timeout) { BT_DBG("session %p state %ld timeout %ld", s, s->state, timeout); - if (!mod_timer(&s->timer, jiffies + timeout)) - rfcomm_session_hold(s); + mod_timer(&s->timer, jiffies + timeout); } static void rfcomm_session_clear_timer(struct rfcomm_session *s) { BT_DBG("session %p state %ld", s, s->state); - if (del_timer(&s->timer)) - rfcomm_session_put(s); + del_timer_sync(&s->timer); } /* ---- RFCOMM DLCs ---- */ @@ -336,8 +328,6 @@ static void rfcomm_dlc_link(struct rfcomm_session *s, struct rfcomm_dlc *d) { BT_DBG("dlc %p session %p", d, s); - rfcomm_session_hold(s); - rfcomm_session_clear_timer(s); rfcomm_dlc_hold(d); list_add(&d->list, &s->dlcs); @@ -356,8 +346,6 @@ static void rfcomm_dlc_unlink(struct rfcomm_dlc *d) if (list_empty(&s->dlcs)) rfcomm_session_set_timer(s, RFCOMM_IDLE_TIMEOUT); - - rfcomm_session_put(s); } static struct rfcomm_dlc *rfcomm_dlc_get(struct rfcomm_session *s, u8 dlci) @@ -493,12 +481,34 @@ static int __rfcomm_dlc_close(struct rfcomm_dlc *d, int err) int rfcomm_dlc_close(struct rfcomm_dlc *d, int err) { - int r; + int r = 0; + struct rfcomm_dlc *d_list; + struct rfcomm_session *s, *s_list; + + BT_DBG("dlc %p state %ld dlci %d err %d", d, d->state, d->dlci, err); rfcomm_lock(); - r = __rfcomm_dlc_close(d, err); + s = d->session; + if (!s) + goto no_session; + + /* after waiting on the mutex check the session still exists + * then check the dlc still exists + */ + list_for_each_entry(s_list, &session_list, list) { + if (s_list == s) { + list_for_each_entry(d_list, &s->dlcs, list) { + if (d_list == d) { + r = __rfcomm_dlc_close(d, err); + break; + } + } + break; + } + } +no_session: rfcomm_unlock(); return r; } @@ -609,7 +619,7 @@ static struct rfcomm_session *rfcomm_session_add(struct socket *sock, int state) return s; } -static void rfcomm_session_del(struct rfcomm_session *s) +static struct rfcomm_session *rfcomm_session_del(struct rfcomm_session *s) { int state = s->state; @@ -617,15 +627,14 @@ static void rfcomm_session_del(struct rfcomm_session *s) list_del(&s->list); - if (state == BT_CONNECTED) - rfcomm_send_disc(s, 0); - rfcomm_session_clear_timer(s); sock_release(s->sock); kfree(s); if (state != BT_LISTEN) module_put(THIS_MODULE); + + return NULL; } static struct rfcomm_session *rfcomm_session_get(bdaddr_t *src, bdaddr_t *dst) @@ -644,17 +653,16 @@ static struct rfcomm_session *rfcomm_session_get(bdaddr_t *src, bdaddr_t *dst) return NULL; } -static void rfcomm_session_close(struct rfcomm_session *s, int err) +static struct rfcomm_session *rfcomm_session_close(struct rfcomm_session *s, + int err) { struct rfcomm_dlc *d; struct list_head *p, *n; - BT_DBG("session %p state %ld err %d", s, s->state, err); - - rfcomm_session_hold(s); - s->state = BT_CLOSED; + BT_DBG("session %p state %ld err %d", s, s->state, err); + /* Close all dlcs */ list_for_each_safe(p, n, &s->dlcs) { d = list_entry(p, struct rfcomm_dlc, list); @@ -663,7 +671,7 @@ static void rfcomm_session_close(struct rfcomm_session *s, int err) } rfcomm_session_clear_timer(s); - rfcomm_session_put(s); + return rfcomm_session_del(s); } static struct rfcomm_session *rfcomm_session_create(bdaddr_t *src, @@ -715,8 +723,7 @@ static struct rfcomm_session *rfcomm_session_create(bdaddr_t *src, if (*err == 0 || *err == -EINPROGRESS) return s; - rfcomm_session_del(s); - return NULL; + return rfcomm_session_del(s); failed: sock_release(sock); @@ -1105,7 +1112,7 @@ static void rfcomm_make_uih(struct sk_buff *skb, u8 addr) } /* ---- RFCOMM frame reception ---- */ -static int rfcomm_recv_ua(struct rfcomm_session *s, u8 dlci) +static struct rfcomm_session *rfcomm_recv_ua(struct rfcomm_session *s, u8 dlci) { BT_DBG("session %p state %ld dlci %d", s, s->state, dlci); @@ -1114,7 +1121,7 @@ static int rfcomm_recv_ua(struct rfcomm_session *s, u8 dlci) struct rfcomm_dlc *d = rfcomm_dlc_get(s, dlci); if (!d) { rfcomm_send_dm(s, dlci); - return 0; + return s; } switch (d->state) { @@ -1150,25 +1157,14 @@ static int rfcomm_recv_ua(struct rfcomm_session *s, u8 dlci) break; case BT_DISCONN: - /* rfcomm_session_put is called later so don't do - * anything here otherwise we will mess up the session - * reference counter: - * - * (a) when we are the initiator dlc_unlink will drive - * the reference counter to 0 (there is no initial put - * after session_add) - * - * (b) when we are not the initiator rfcomm_rx_process - * will explicitly call put to balance the initial hold - * done after session add. - */ + s = rfcomm_session_close(s, ECONNRESET); break; } } - return 0; + return s; } -static int rfcomm_recv_dm(struct rfcomm_session *s, u8 dlci) +static struct rfcomm_session *rfcomm_recv_dm(struct rfcomm_session *s, u8 dlci) { int err = 0; @@ -1192,13 +1188,13 @@ static int rfcomm_recv_dm(struct rfcomm_session *s, u8 dlci) else err = ECONNRESET; - s->state = BT_CLOSED; - rfcomm_session_close(s, err); + s = rfcomm_session_close(s, err); } - return 0; + return s; } -static int rfcomm_recv_disc(struct rfcomm_session *s, u8 dlci) +static struct rfcomm_session *rfcomm_recv_disc(struct rfcomm_session *s, + u8 dlci) { int err = 0; @@ -1227,11 +1223,9 @@ static int rfcomm_recv_disc(struct rfcomm_session *s, u8 dlci) else err = ECONNRESET; - s->state = BT_CLOSED; - rfcomm_session_close(s, err); + s = rfcomm_session_close(s, err); } - - return 0; + return s; } void rfcomm_dlc_accept(struct rfcomm_dlc *d) @@ -1652,11 +1646,18 @@ drop: return 0; } -static int rfcomm_recv_frame(struct rfcomm_session *s, struct sk_buff *skb) +static struct rfcomm_session *rfcomm_recv_frame(struct rfcomm_session *s, + struct sk_buff *skb) { struct rfcomm_hdr *hdr = (void *) skb->data; u8 type, dlci, fcs; + if (!s) { + /* no session, so free socket data */ + kfree_skb(skb); + return s; + } + dlci = __get_dlci(hdr->addr); type = __get_type(hdr->ctrl); @@ -1667,7 +1668,7 @@ static int rfcomm_recv_frame(struct rfcomm_session *s, struct sk_buff *skb) if (__check_fcs(skb->data, type, fcs)) { BT_ERR("bad checksum in packet"); kfree_skb(skb); - return -EILSEQ; + return s; } if (__test_ea(hdr->len)) @@ -1683,22 +1684,23 @@ static int rfcomm_recv_frame(struct rfcomm_session *s, struct sk_buff *skb) case RFCOMM_DISC: if (__test_pf(hdr->ctrl)) - rfcomm_recv_disc(s, dlci); + s = rfcomm_recv_disc(s, dlci); break; case RFCOMM_UA: if (__test_pf(hdr->ctrl)) - rfcomm_recv_ua(s, dlci); + s = rfcomm_recv_ua(s, dlci); break; case RFCOMM_DM: - rfcomm_recv_dm(s, dlci); + s = rfcomm_recv_dm(s, dlci); break; case RFCOMM_UIH: - if (dlci) - return rfcomm_recv_data(s, dlci, __test_pf(hdr->ctrl), skb); - + if (dlci) { + rfcomm_recv_data(s, dlci, __test_pf(hdr->ctrl), skb); + return s; + } rfcomm_recv_mcc(s, skb); break; @@ -1707,7 +1709,7 @@ static int rfcomm_recv_frame(struct rfcomm_session *s, struct sk_buff *skb) break; } kfree_skb(skb); - return 0; + return s; } /* ---- Connection and data processing ---- */ @@ -1844,7 +1846,7 @@ static void rfcomm_process_dlcs(struct rfcomm_session *s) } } -static void rfcomm_process_rx(struct rfcomm_session *s) +static struct rfcomm_session *rfcomm_process_rx(struct rfcomm_session *s) { struct socket *sock = s->sock; struct sock *sk = sock->sk; @@ -1856,17 +1858,15 @@ static void rfcomm_process_rx(struct rfcomm_session *s) while ((skb = skb_dequeue(&sk->sk_receive_queue))) { skb_orphan(skb); if (!skb_linearize(skb)) - rfcomm_recv_frame(s, skb); + s = rfcomm_recv_frame(s, skb); else kfree_skb(skb); } - if (sk->sk_state == BT_CLOSED) { - if (!s->initiator) - rfcomm_session_put(s); + if (s && (sk->sk_state == BT_CLOSED)) + s = rfcomm_session_close(s, sk->sk_err); - rfcomm_session_close(s, sk->sk_err); - } + return s; } static void rfcomm_accept_connection(struct rfcomm_session *s) @@ -1891,8 +1891,6 @@ static void rfcomm_accept_connection(struct rfcomm_session *s) s = rfcomm_session_add(nsock, BT_OPEN); if (s) { - rfcomm_session_hold(s); - /* We should adjust MTU on incoming sessions. * L2CAP MTU minus UIH header and FCS. */ s->mtu = min(l2cap_pi(nsock->sk)->chan->omtu, @@ -1903,7 +1901,7 @@ static void rfcomm_accept_connection(struct rfcomm_session *s) sock_release(nsock); } -static void rfcomm_check_connection(struct rfcomm_session *s) +static struct rfcomm_session *rfcomm_check_connection(struct rfcomm_session *s) { struct sock *sk = s->sock->sk; @@ -1921,10 +1919,10 @@ static void rfcomm_check_connection(struct rfcomm_session *s) break; case BT_CLOSED: - s->state = BT_CLOSED; - rfcomm_session_close(s, sk->sk_err); + s = rfcomm_session_close(s, sk->sk_err); break; } + return s; } static void rfcomm_process_sessions(void) @@ -1940,7 +1938,6 @@ static void rfcomm_process_sessions(void) if (test_and_clear_bit(RFCOMM_TIMED_OUT, &s->flags)) { s->state = BT_DISCONN; rfcomm_send_disc(s, 0); - rfcomm_session_put(s); continue; } @@ -1949,21 +1946,18 @@ static void rfcomm_process_sessions(void) continue; } - rfcomm_session_hold(s); - switch (s->state) { case BT_BOUND: - rfcomm_check_connection(s); + s = rfcomm_check_connection(s); break; default: - rfcomm_process_rx(s); + s = rfcomm_process_rx(s); break; } - rfcomm_process_dlcs(s); - - rfcomm_session_put(s); + if (s) + rfcomm_process_dlcs(s); } rfcomm_unlock(); @@ -2010,10 +2004,11 @@ static int rfcomm_add_listener(bdaddr_t *ba) /* Add listening session */ s = rfcomm_session_add(sock, BT_LISTEN); - if (!s) + if (!s) { + err = -ENOMEM; goto failed; + } - rfcomm_session_hold(s); return 0; failed: sock_release(sock); @@ -2071,8 +2066,6 @@ static void rfcomm_security_cfm(struct hci_conn *conn, u8 status, u8 encrypt) if (!s) return; - rfcomm_session_hold(s); - list_for_each_safe(p, n, &s->dlcs) { d = list_entry(p, struct rfcomm_dlc, list); @@ -2104,8 +2097,6 @@ static void rfcomm_security_cfm(struct hci_conn *conn, u8 status, u8 encrypt) set_bit(RFCOMM_AUTH_REJECT, &d->flags); } - rfcomm_session_put(s); - rfcomm_schedule(); } diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c index c23bae86263b..30b3721dc6d7 100644 --- a/net/bluetooth/rfcomm/sock.c +++ b/net/bluetooth/rfcomm/sock.c @@ -608,6 +608,7 @@ static int rfcomm_sock_recvmsg(struct kiocb *iocb, struct socket *sock, if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) { rfcomm_dlc_accept(d); + msg->msg_namelen = 0; return 0; } @@ -1036,7 +1037,7 @@ int __init rfcomm_init_sockets(void) goto error; } - err = bt_procfs_init(THIS_MODULE, &init_net, "rfcomm", &rfcomm_sk_list, NULL); + err = bt_procfs_init(&init_net, "rfcomm", &rfcomm_sk_list, NULL); if (err < 0) { BT_ERR("Failed to create RFCOMM proc file"); bt_sock_unregister(BTPROTO_RFCOMM); @@ -1065,8 +1066,7 @@ void __exit rfcomm_cleanup_sockets(void) debugfs_remove(rfcomm_sock_debugfs); - if (bt_sock_unregister(BTPROTO_RFCOMM) < 0) - BT_ERR("RFCOMM socket layer unregistration failed"); + bt_sock_unregister(BTPROTO_RFCOMM); proto_unregister(&rfcomm_proto); } diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index 79d87d8d4f51..e7bd4eea575c 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -83,7 +83,7 @@ static struct sco_conn *sco_conn_add(struct hci_conn *hcon) if (conn) return conn; - conn = kzalloc(sizeof(struct sco_conn), GFP_ATOMIC); + conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL); if (!conn) return NULL; @@ -185,7 +185,7 @@ static int sco_connect(struct sock *sk) conn = sco_conn_add(hcon); if (!conn) { - hci_conn_put(hcon); + hci_conn_drop(hcon); err = -ENOMEM; goto done; } @@ -353,12 +353,13 @@ static void __sco_sock_close(struct sock *sk) if (sco_pi(sk)->conn->hcon) { sk->sk_state = BT_DISCONN; sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT); - hci_conn_put(sco_pi(sk)->conn->hcon); + hci_conn_drop(sco_pi(sk)->conn->hcon); sco_pi(sk)->conn->hcon = NULL; } else sco_chan_del(sk, ECONNRESET); break; + case BT_CONNECT2: case BT_CONNECT: case BT_DISCONN: sco_chan_del(sk, ECONNRESET); @@ -480,8 +481,7 @@ static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen { struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; struct sock *sk = sock->sk; - int err = 0; - + int err; BT_DBG("sk %p", sk); @@ -652,6 +652,42 @@ static int sco_sock_sendmsg(struct kiocb *iocb, struct socket *sock, return err; } +static void sco_conn_defer_accept(struct hci_conn *conn, int mask) +{ + struct hci_dev *hdev = conn->hdev; + + BT_DBG("conn %p", conn); + + conn->state = BT_CONFIG; + + if (!lmp_esco_capable(hdev)) { + struct hci_cp_accept_conn_req cp; + + bacpy(&cp.bdaddr, &conn->dst); + + if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) + cp.role = 0x00; /* Become master */ + else + cp.role = 0x01; /* Remain slave */ + + hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); + } else { + struct hci_cp_accept_sync_conn_req cp; + + bacpy(&cp.bdaddr, &conn->dst); + cp.pkt_type = cpu_to_le16(conn->pkt_type); + + cp.tx_bandwidth = __constant_cpu_to_le32(0x00001f40); + cp.rx_bandwidth = __constant_cpu_to_le32(0x00001f40); + cp.max_latency = __constant_cpu_to_le16(0xffff); + cp.content_format = cpu_to_le16(hdev->voice_setting); + cp.retrans_effort = 0xff; + + hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, + sizeof(cp), &cp); + } +} + static int sco_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags) { @@ -662,8 +698,9 @@ static int sco_sock_recvmsg(struct kiocb *iocb, struct socket *sock, if (sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { - hci_conn_accept(pi->conn->hcon, 0); + sco_conn_defer_accept(pi->conn->hcon, 0); sk->sk_state = BT_CONFIG; + msg->msg_namelen = 0; release_sock(sk); return 0; @@ -881,7 +918,7 @@ static void sco_chan_del(struct sock *sk, int err) sco_conn_unlock(conn); if (conn->hcon) - hci_conn_put(conn->hcon); + hci_conn_drop(conn->hcon); } sk->sk_state = BT_CLOSED; @@ -1082,7 +1119,7 @@ int __init sco_init(void) goto error; } - err = bt_procfs_init(THIS_MODULE, &init_net, "sco", &sco_sk_list, NULL); + err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL); if (err < 0) { BT_ERR("Failed to create SCO proc file"); bt_sock_unregister(BTPROTO_SCO); @@ -1111,8 +1148,7 @@ void __exit sco_exit(void) debugfs_remove(sco_debugfs); - if (bt_sock_unregister(BTPROTO_SCO) < 0) - BT_ERR("SCO socket unregistration failed"); + bt_sock_unregister(BTPROTO_SCO); proto_unregister(&sco_proto); } diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c index 5abefb12891d..b2296d3857a0 100644 --- a/net/bluetooth/smp.c +++ b/net/bluetooth/smp.c @@ -522,7 +522,7 @@ void smp_chan_destroy(struct l2cap_conn *conn) kfree(smp); conn->smp_chan = NULL; conn->hcon->smp_conn = NULL; - hci_conn_put(conn->hcon); + hci_conn_drop(conn->hcon); } int smp_user_confirm_reply(struct hci_conn *hcon, u16 mgmt_op, __le32 passkey) |