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net/bluetooth/sco.c
24.7 KB
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/* |
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BlueZ - Bluetooth protocol stack for Linux Copyright (C) 2000-2001 Qualcomm Incorporated Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.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 published by the Free Software Foundation; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
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CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
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SOFTWARE IS DISCLAIMED. */ /* Bluetooth SCO sockets. */ |
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#include <linux/module.h> |
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#include <linux/debugfs.h> #include <linux/seq_file.h> |
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#include <linux/sched/signal.h> |
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#include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> #include <net/bluetooth/sco.h> |
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static bool disable_esco; |
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|
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static const struct proto_ops sco_sock_ops; |
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static struct bt_sock_list sco_sk_list = { |
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.lock = __RW_LOCK_UNLOCKED(sco_sk_list.lock) |
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}; |
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/* ---- SCO connections ---- */ struct sco_conn { struct hci_conn *hcon; spinlock_t lock; struct sock *sk; unsigned int mtu; }; #define sco_conn_lock(c) spin_lock(&c->lock); #define sco_conn_unlock(c) spin_unlock(&c->lock); |
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static void sco_sock_close(struct sock *sk); static void sco_sock_kill(struct sock *sk); |
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/* ----- SCO socket info ----- */ #define sco_pi(sk) ((struct sco_pinfo *) sk) struct sco_pinfo { struct bt_sock bt; bdaddr_t src; bdaddr_t dst; __u32 flags; __u16 setting; struct sco_conn *conn; }; |
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/* ---- SCO timers ---- */ |
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#define SCO_CONN_TIMEOUT (HZ * 40) #define SCO_DISCONN_TIMEOUT (HZ * 2) |
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static void sco_sock_timeout(unsigned long arg) { |
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struct sock *sk = (struct sock *)arg; |
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BT_DBG("sock %p state %d", sk, sk->sk_state); bh_lock_sock(sk); sk->sk_err = ETIMEDOUT; sk->sk_state_change(sk); bh_unlock_sock(sk); sco_sock_kill(sk); sock_put(sk); } static void sco_sock_set_timer(struct sock *sk, long timeout) { BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout); sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout); } static void sco_sock_clear_timer(struct sock *sk) { BT_DBG("sock %p state %d", sk, sk->sk_state); sk_stop_timer(sk, &sk->sk_timer); } |
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/* ---- SCO connections ---- */ |
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static struct sco_conn *sco_conn_add(struct hci_conn *hcon) |
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{ struct hci_dev *hdev = hcon->hdev; |
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struct sco_conn *conn = hcon->sco_data; |
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|
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if (conn) |
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return conn; |
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conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL); |
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if (!conn) |
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return NULL; |
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spin_lock_init(&conn->lock); hcon->sco_data = conn; conn->hcon = hcon; |
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if (hdev->sco_mtu > 0) conn->mtu = hdev->sco_mtu; else conn->mtu = 60; BT_DBG("hcon %p conn %p", hcon, conn); |
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|
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return conn; } |
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/* Delete channel. * Must be called on the locked socket. */ static void sco_chan_del(struct sock *sk, int err) { struct sco_conn *conn; conn = sco_pi(sk)->conn; BT_DBG("sk %p, conn %p, err %d", sk, conn, err); if (conn) { sco_conn_lock(conn); conn->sk = NULL; sco_pi(sk)->conn = NULL; sco_conn_unlock(conn); if (conn->hcon) hci_conn_drop(conn->hcon); } sk->sk_state = BT_CLOSED; sk->sk_err = err; sk->sk_state_change(sk); sock_set_flag(sk, SOCK_ZAPPED); } |
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static void sco_conn_del(struct hci_conn *hcon, int err) |
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{ |
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struct sco_conn *conn = hcon->sco_data; |
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struct sock *sk; |
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if (!conn) |
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return; |
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BT_DBG("hcon %p conn %p, err %d", hcon, conn, err); /* Kill socket */ |
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sco_conn_lock(conn); sk = conn->sk; sco_conn_unlock(conn); |
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if (sk) { |
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sock_hold(sk); |
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bh_lock_sock(sk); sco_sock_clear_timer(sk); sco_chan_del(sk, err); bh_unlock_sock(sk); sco_sock_kill(sk); |
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sock_put(sk); |
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} hcon->sco_data = NULL; kfree(conn); |
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} |
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static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent) |
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{ BT_DBG("conn %p", conn); sco_pi(sk)->conn = conn; conn->sk = sk; if (parent) bt_accept_enqueue(parent, sk); } |
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static int sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent) |
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{ int err = 0; sco_conn_lock(conn); |
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if (conn->sk) |
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err = -EBUSY; |
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else |
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__sco_chan_add(conn, sk, parent); |
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|
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sco_conn_unlock(conn); return err; } static int sco_connect(struct sock *sk) { |
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struct sco_conn *conn; struct hci_conn *hcon; struct hci_dev *hdev; |
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int err, type; |
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|
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BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst); |
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|
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hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, BDADDR_BREDR); |
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if (!hdev) |
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return -EHOSTUNREACH; |
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hci_dev_lock(hdev); |
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|
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if (lmp_esco_capable(hdev) && !disable_esco) type = ESCO_LINK; else type = SCO_LINK; |
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|
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if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT && (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) { err = -EOPNOTSUPP; goto done; } |
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hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst, |
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sco_pi(sk)->setting); |
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if (IS_ERR(hcon)) { err = PTR_ERR(hcon); |
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goto done; |
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} |
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|
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conn = sco_conn_add(hcon); |
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if (!conn) { |
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hci_conn_drop(hcon); |
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err = -ENOMEM; |
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goto done; } /* Update source addr of the socket */ |
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bacpy(&sco_pi(sk)->src, &hcon->src); |
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err = sco_chan_add(conn, sk, NULL); if (err) goto done; if (hcon->state == BT_CONNECTED) { sco_sock_clear_timer(sk); sk->sk_state = BT_CONNECTED; } else { sk->sk_state = BT_CONNECT; sco_sock_set_timer(sk, sk->sk_sndtimeo); } |
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|
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done: |
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hci_dev_unlock(hdev); |
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hci_dev_put(hdev); return err; } |
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static int sco_send_frame(struct sock *sk, struct msghdr *msg, int len) |
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{ struct sco_conn *conn = sco_pi(sk)->conn; struct sk_buff *skb; |
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int err; |
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/* Check outgoing MTU */ if (len > conn->mtu) return -EINVAL; BT_DBG("sk %p len %d", sk, len); |
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skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
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if (!skb) |
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return err; |
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if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
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kfree_skb(skb); return -EFAULT; |
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} |
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hci_send_sco(conn->hcon, skb); |
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|
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return len; |
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} |
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static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb) |
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{ |
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struct sock *sk; sco_conn_lock(conn); sk = conn->sk; sco_conn_unlock(conn); |
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if (!sk) goto drop; BT_DBG("sk %p len %d", sk, skb->len); if (sk->sk_state != BT_CONNECTED) goto drop; if (!sock_queue_rcv_skb(sk, skb)) return; drop: kfree_skb(skb); |
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} /* -------- Socket interface ---------- */ |
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static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba) |
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{ |
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struct sock *sk; |
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sk_for_each(sk, &sco_sk_list.head) { |
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if (sk->sk_state != BT_LISTEN) continue; |
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|
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if (!bacmp(&sco_pi(sk)->src, ba)) |
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return sk; } return NULL; |
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} /* Find socket listening on source bdaddr. * Returns closest match. */ static struct sock *sco_get_sock_listen(bdaddr_t *src) { struct sock *sk = NULL, *sk1 = NULL; |
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read_lock(&sco_sk_list.lock); |
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sk_for_each(sk, &sco_sk_list.head) { |
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if (sk->sk_state != BT_LISTEN) continue; /* Exact match. */ |
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if (!bacmp(&sco_pi(sk)->src, src)) |
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break; /* Closest match */ |
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if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY)) |
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sk1 = sk; } read_unlock(&sco_sk_list.lock); |
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return sk ? sk : sk1; |
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} static void sco_sock_destruct(struct sock *sk) { BT_DBG("sk %p", sk); skb_queue_purge(&sk->sk_receive_queue); skb_queue_purge(&sk->sk_write_queue); } static void sco_sock_cleanup_listen(struct sock *parent) { struct sock *sk; BT_DBG("parent %p", parent); /* Close not yet accepted channels */ while ((sk = bt_accept_dequeue(parent, NULL))) { sco_sock_close(sk); sco_sock_kill(sk); } parent->sk_state = BT_CLOSED; sock_set_flag(parent, SOCK_ZAPPED); } /* Kill socket (only if zapped and orphan) * Must be called on unlocked socket. */ static void sco_sock_kill(struct sock *sk) { |
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if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket || sock_flag(sk, SOCK_DEAD)) |
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return; BT_DBG("sk %p state %d", sk, sk->sk_state); /* Kill poor orphan */ bt_sock_unlink(&sco_sk_list, sk); sock_set_flag(sk, SOCK_DEAD); sock_put(sk); } |
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static void __sco_sock_close(struct sock *sk) |
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{ |
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BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); |
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switch (sk->sk_state) { case BT_LISTEN: sco_sock_cleanup_listen(sk); break; case BT_CONNECTED: case BT_CONFIG: |
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if (sco_pi(sk)->conn->hcon) { |
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sk->sk_state = BT_DISCONN; sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT); |
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sco_conn_lock(sco_pi(sk)->conn); |
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hci_conn_drop(sco_pi(sk)->conn->hcon); |
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sco_pi(sk)->conn->hcon = NULL; |
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sco_conn_unlock(sco_pi(sk)->conn); |
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} else sco_chan_del(sk, ECONNRESET); break; |
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case BT_CONNECT2: |
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case BT_CONNECT: case BT_DISCONN: sco_chan_del(sk, ECONNRESET); break; default: sock_set_flag(sk, SOCK_ZAPPED); break; |
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} |
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} |
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|
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/* Must be called on unlocked socket. */ static void sco_sock_close(struct sock *sk) { sco_sock_clear_timer(sk); lock_sock(sk); __sco_sock_close(sk); |
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release_sock(sk); |
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sco_sock_kill(sk); } static void sco_sock_init(struct sock *sk, struct sock *parent) { BT_DBG("sk %p", sk); |
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if (parent) { |
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sk->sk_type = parent->sk_type; |
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bt_sk(sk)->flags = bt_sk(parent)->flags; |
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security_sk_clone(parent, sk); } |
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} static struct proto sco_proto = { .name = "SCO", .owner = THIS_MODULE, .obj_size = sizeof(struct sco_pinfo) }; |
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static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio, int kern) |
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{ struct sock *sk; |
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sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto, kern); |
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if (!sk) return NULL; sock_init_data(sock, sk); INIT_LIST_HEAD(&bt_sk(sk)->accept_q); sk->sk_destruct = sco_sock_destruct; sk->sk_sndtimeo = SCO_CONN_TIMEOUT; sock_reset_flag(sk, SOCK_ZAPPED); sk->sk_protocol = proto; sk->sk_state = BT_OPEN; |
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sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT; |
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setup_timer(&sk->sk_timer, sco_sock_timeout, (unsigned long)sk); |
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bt_sock_link(&sco_sk_list, sk); return sk; } |
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static int sco_sock_create(struct net *net, struct socket *sock, int protocol, int kern) |
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{ struct sock *sk; BT_DBG("sock %p", sock); sock->state = SS_UNCONNECTED; if (sock->type != SOCK_SEQPACKET) return -ESOCKTNOSUPPORT; sock->ops = &sco_sock_ops; |
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sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern); |
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if (!sk) |
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return -ENOMEM; sco_sock_init(sk, NULL); return 0; } |
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static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) |
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{ struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; struct sock *sk = sock->sk; |
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int err = 0; |
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BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr); |
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|
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if (!addr || addr_len < sizeof(struct sockaddr_sco) || addr->sa_family != AF_BLUETOOTH) |
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return -EINVAL; |
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lock_sock(sk); if (sk->sk_state != BT_OPEN) { err = -EBADFD; goto done; } |
8ed21f7ee Bluetooth: Don't ... |
499 500 501 |
if (sk->sk_type != SOCK_SEQPACKET) { err = -EINVAL; goto done; |
1da177e4c Linux-2.6.12-rc2 |
502 |
} |
eea963641 Bluetooth: Store ... |
503 |
bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr); |
8ed21f7ee Bluetooth: Don't ... |
504 505 |
sk->sk_state = BT_BOUND; |
1da177e4c Linux-2.6.12-rc2 |
506 507 508 509 510 511 512 513 514 515 |
done: release_sock(sk); return err; } static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) { struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; struct sock *sk = sock->sk; |
92f185c89 Bluetooth: Minor ... |
516 |
int err; |
1da177e4c Linux-2.6.12-rc2 |
517 518 |
BT_DBG("sk %p", sk); |
6503d9616 net: check the le... |
519 520 |
if (alen < sizeof(struct sockaddr_sco) || addr->sa_family != AF_BLUETOOTH) |
1da177e4c Linux-2.6.12-rc2 |
521 522 523 524 525 526 527 528 529 530 531 |
return -EINVAL; if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) return -EBADFD; if (sk->sk_type != SOCK_SEQPACKET) return -EINVAL; lock_sock(sk); /* Set destination address and psm */ |
eea963641 Bluetooth: Store ... |
532 |
bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr); |
1da177e4c Linux-2.6.12-rc2 |
533 |
|
735cbc478 Bluetooth: clean ... |
534 535 |
err = sco_connect(sk); if (err) |
1da177e4c Linux-2.6.12-rc2 |
536 |
goto done; |
8e87d1425 [NET] BLUETOOTH: ... |
537 |
err = bt_sock_wait_state(sk, BT_CONNECTED, |
be7c2b99e Bluetooth: Fix co... |
538 |
sock_sndtimeo(sk, flags & O_NONBLOCK)); |
1da177e4c Linux-2.6.12-rc2 |
539 540 541 542 543 544 545 546 547 |
done: release_sock(sk); return err; } static int sco_sock_listen(struct socket *sock, int backlog) { struct sock *sk = sock->sk; |
eea963641 Bluetooth: Store ... |
548 |
bdaddr_t *src = &sco_pi(sk)->src; |
1da177e4c Linux-2.6.12-rc2 |
549 550 551 552 553 |
int err = 0; BT_DBG("sk %p backlog %d", sk, backlog); lock_sock(sk); |
7d5d775a5 Bluetooth: Split ... |
554 |
if (sk->sk_state != BT_BOUND) { |
1da177e4c Linux-2.6.12-rc2 |
555 556 557 |
err = -EBADFD; goto done; } |
7d5d775a5 Bluetooth: Split ... |
558 559 560 561 |
if (sk->sk_type != SOCK_SEQPACKET) { err = -EINVAL; goto done; } |
fb3340594 Bluetooth: Restri... |
562 563 564 565 566 567 |
write_lock(&sco_sk_list.lock); if (__sco_get_sock_listen_by_addr(src)) { err = -EADDRINUSE; goto unlock; } |
1da177e4c Linux-2.6.12-rc2 |
568 569 |
sk->sk_max_ack_backlog = backlog; sk->sk_ack_backlog = 0; |
fb3340594 Bluetooth: Restri... |
570 |
|
1da177e4c Linux-2.6.12-rc2 |
571 |
sk->sk_state = BT_LISTEN; |
fb3340594 Bluetooth: Restri... |
572 573 |
unlock: write_unlock(&sco_sk_list.lock); |
1da177e4c Linux-2.6.12-rc2 |
574 575 576 577 |
done: release_sock(sk); return err; } |
c4297e8f7 Bluetooth: Fix so... |
578 |
static int sco_sock_accept(struct socket *sock, struct socket *newsock, |
cdfbabfb2 net: Work around ... |
579 |
int flags, bool kern) |
1da177e4c Linux-2.6.12-rc2 |
580 |
{ |
dfb2fae7c Bluetooth: Fix ne... |
581 |
DEFINE_WAIT_FUNC(wait, woken_wake_function); |
1da177e4c Linux-2.6.12-rc2 |
582 583 584 585 586 |
struct sock *sk = sock->sk, *ch; long timeo; int err = 0; lock_sock(sk); |
1da177e4c Linux-2.6.12-rc2 |
587 588 589 590 591 |
timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); BT_DBG("sk %p timeo %ld", sk, timeo); /* Wait for an incoming connection. (wake-one). */ |
aa3951451 net: sk_sleep() h... |
592 |
add_wait_queue_exclusive(sk_sleep(sk), &wait); |
552b0d3cb Bluetooth: sco: F... |
593 |
while (1) { |
552b0d3cb Bluetooth: sco: F... |
594 595 |
if (sk->sk_state != BT_LISTEN) { err = -EBADFD; |
1da177e4c Linux-2.6.12-rc2 |
596 597 |
break; } |
552b0d3cb Bluetooth: sco: F... |
598 599 600 |
ch = bt_accept_dequeue(sk, newsock); if (ch) break; |
1da177e4c Linux-2.6.12-rc2 |
601 |
|
552b0d3cb Bluetooth: sco: F... |
602 603 |
if (!timeo) { err = -EAGAIN; |
1da177e4c Linux-2.6.12-rc2 |
604 605 606 607 608 609 610 |
break; } if (signal_pending(current)) { err = sock_intr_errno(timeo); break; } |
552b0d3cb Bluetooth: sco: F... |
611 612 |
release_sock(sk); |
dfb2fae7c Bluetooth: Fix ne... |
613 614 |
timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo); |
552b0d3cb Bluetooth: sco: F... |
615 |
lock_sock(sk); |
1da177e4c Linux-2.6.12-rc2 |
616 |
} |
aa3951451 net: sk_sleep() h... |
617 |
remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4c Linux-2.6.12-rc2 |
618 619 620 621 622 623 624 625 626 627 628 629 |
if (err) goto done; newsock->state = SS_CONNECTED; BT_DBG("new socket %p", ch); done: release_sock(sk); return err; } |
c4297e8f7 Bluetooth: Fix so... |
630 631 |
static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) |
1da177e4c Linux-2.6.12-rc2 |
632 633 634 635 636 637 638 639 640 641 |
{ struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; struct sock *sk = sock->sk; BT_DBG("sock %p, sk %p", sock, sk); addr->sa_family = AF_BLUETOOTH; *len = sizeof(struct sockaddr_sco); if (peer) |
eea963641 Bluetooth: Store ... |
642 |
bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst); |
1da177e4c Linux-2.6.12-rc2 |
643 |
else |
eea963641 Bluetooth: Store ... |
644 |
bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src); |
1da177e4c Linux-2.6.12-rc2 |
645 646 647 |
return 0; } |
1b7841404 net: Remove iocb ... |
648 649 |
static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) |
1da177e4c Linux-2.6.12-rc2 |
650 651 |
{ struct sock *sk = sock->sk; |
b9dbdbc1f Bluetooth: Trivia... |
652 |
int err; |
1da177e4c Linux-2.6.12-rc2 |
653 654 |
BT_DBG("sock %p, sk %p", sock, sk); |
c1cbe4b7a [NET]: Avoid atom... |
655 656 657 |
err = sock_error(sk); if (err) return err; |
1da177e4c Linux-2.6.12-rc2 |
658 659 660 661 662 663 664 665 666 667 668 669 670 671 |
if (msg->msg_flags & MSG_OOB) return -EOPNOTSUPP; lock_sock(sk); if (sk->sk_state == BT_CONNECTED) err = sco_send_frame(sk, msg, len); else err = -ENOTCONN; release_sock(sk); return err; } |
2f69a82ac Bluetooth: Use vo... |
672 |
static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting) |
fa5513be2 Bluetooth: Move a... |
673 674 675 676 677 678 679 680 681 682 683 |
{ 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); |
33f240482 Bluetooth: Remove... |
684 |
cp.role = 0x00; /* Ignored */ |
fa5513be2 Bluetooth: Move a... |
685 686 687 688 689 690 691 |
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); |
dcf4adbfd Bluetooth: Conver... |
692 693 |
cp.tx_bandwidth = cpu_to_le32(0x00001f40); cp.rx_bandwidth = cpu_to_le32(0x00001f40); |
2f69a82ac Bluetooth: Use vo... |
694 695 696 697 698 |
cp.content_format = cpu_to_le16(setting); switch (setting & SCO_AIRMODE_MASK) { case SCO_AIRMODE_TRANSP: if (conn->pkt_type & ESCO_2EV3) |
dcf4adbfd Bluetooth: Conver... |
699 |
cp.max_latency = cpu_to_le16(0x0008); |
2f69a82ac Bluetooth: Use vo... |
700 |
else |
dcf4adbfd Bluetooth: Conver... |
701 |
cp.max_latency = cpu_to_le16(0x000D); |
2f69a82ac Bluetooth: Use vo... |
702 703 704 |
cp.retrans_effort = 0x02; break; case SCO_AIRMODE_CVSD: |
dcf4adbfd Bluetooth: Conver... |
705 |
cp.max_latency = cpu_to_le16(0xffff); |
2f69a82ac Bluetooth: Use vo... |
706 707 708 |
cp.retrans_effort = 0xff; break; } |
fa5513be2 Bluetooth: Move a... |
709 710 711 712 713 |
hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), &cp); } } |
1b7841404 net: Remove iocb ... |
714 715 |
static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, int flags) |
20714bfef Bluetooth: Implem... |
716 717 718 719 720 721 722 723 |
{ struct sock *sk = sock->sk; struct sco_pinfo *pi = sco_pi(sk); lock_sock(sk); if (sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { |
2f69a82ac Bluetooth: Use vo... |
724 |
sco_conn_defer_accept(pi->conn->hcon, pi->setting); |
20714bfef Bluetooth: Implem... |
725 726 727 728 729 730 731 |
sk->sk_state = BT_CONFIG; release_sock(sk); return 0; } release_sock(sk); |
1b7841404 net: Remove iocb ... |
732 |
return bt_sock_recvmsg(sock, msg, len, flags); |
20714bfef Bluetooth: Implem... |
733 |
} |
c4297e8f7 Bluetooth: Fix so... |
734 735 |
static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) |
1da177e4c Linux-2.6.12-rc2 |
736 737 |
{ struct sock *sk = sock->sk; |
ad10b1a48 Bluetooth: Add Bl... |
738 739 |
int len, err = 0; struct bt_voice voice; |
b96e9c671 Bluetooth: Add BT... |
740 |
u32 opt; |
1da177e4c Linux-2.6.12-rc2 |
741 742 743 744 745 746 |
BT_DBG("sk %p", sk); lock_sock(sk); switch (optname) { |
b96e9c671 Bluetooth: Add BT... |
747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 |
case BT_DEFER_SETUP: if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { err = -EINVAL; break; } if (get_user(opt, (u32 __user *) optval)) { err = -EFAULT; break; } if (opt) set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); else clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); break; |
ad10b1a48 Bluetooth: Add Bl... |
764 765 766 767 768 769 770 771 772 773 |
case BT_VOICE: if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && sk->sk_state != BT_CONNECT2) { err = -EINVAL; break; } voice.setting = sco_pi(sk)->setting; len = min_t(unsigned int, sizeof(voice), optlen); |
c4297e8f7 Bluetooth: Fix so... |
774 |
if (copy_from_user((char *)&voice, optval, len)) { |
ad10b1a48 Bluetooth: Add Bl... |
775 776 777 778 779 780 781 782 783 784 785 786 787 |
err = -EFAULT; break; } /* Explicitly check for these values */ if (voice.setting != BT_VOICE_TRANSPARENT && voice.setting != BT_VOICE_CVSD_16BIT) { err = -EINVAL; break; } sco_pi(sk)->setting = voice.setting; break; |
1da177e4c Linux-2.6.12-rc2 |
788 789 790 791 792 793 794 795 |
default: err = -ENOPROTOOPT; break; } release_sock(sk); return err; } |
c4297e8f7 Bluetooth: Fix so... |
796 797 |
static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
1da177e4c Linux-2.6.12-rc2 |
798 799 800 801 |
{ struct sock *sk = sock->sk; struct sco_options opts; struct sco_conninfo cinfo; |
8e87d1425 [NET] BLUETOOTH: ... |
802 |
int len, err = 0; |
1da177e4c Linux-2.6.12-rc2 |
803 804 805 806 807 808 809 810 811 812 |
BT_DBG("sk %p", sk); if (get_user(len, optlen)) return -EFAULT; lock_sock(sk); switch (optname) { case SCO_OPTIONS: |
9d225d220 Bluetooth: Fix ge... |
813 814 815 |
if (sk->sk_state != BT_CONNECTED && !(sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { |
1da177e4c Linux-2.6.12-rc2 |
816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 |
err = -ENOTCONN; break; } opts.mtu = sco_pi(sk)->conn->mtu; BT_DBG("mtu %d", opts.mtu); len = min_t(unsigned int, len, sizeof(opts)); if (copy_to_user(optval, (char *)&opts, len)) err = -EFAULT; break; case SCO_CONNINFO: |
9d225d220 Bluetooth: Fix ge... |
831 832 833 |
if (sk->sk_state != BT_CONNECTED && !(sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { |
1da177e4c Linux-2.6.12-rc2 |
834 835 836 |
err = -ENOTCONN; break; } |
c4c896e14 Bluetooth: sco: f... |
837 |
memset(&cinfo, 0, sizeof(cinfo)); |
1da177e4c Linux-2.6.12-rc2 |
838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 |
cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle; memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3); len = min_t(unsigned int, len, sizeof(cinfo)); if (copy_to_user(optval, (char *)&cinfo, len)) err = -EFAULT; break; default: err = -ENOPROTOOPT; break; } release_sock(sk); return err; } |
c4297e8f7 Bluetooth: Fix so... |
855 856 |
static int sco_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) |
d58daf42d Bluetooth: Prepar... |
857 858 859 |
{ struct sock *sk = sock->sk; int len, err = 0; |
ad10b1a48 Bluetooth: Add Bl... |
860 |
struct bt_voice voice; |
d58daf42d Bluetooth: Prepar... |
861 862 863 864 865 866 867 868 869 870 871 872 |
BT_DBG("sk %p", sk); if (level == SOL_SCO) return sco_sock_getsockopt_old(sock, optname, optval, optlen); if (get_user(len, optlen)) return -EFAULT; lock_sock(sk); switch (optname) { |
b96e9c671 Bluetooth: Add BT... |
873 874 875 876 877 878 879 880 |
case BT_DEFER_SETUP: if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { err = -EINVAL; break; } if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), |
c4297e8f7 Bluetooth: Fix so... |
881 |
(u32 __user *)optval)) |
b96e9c671 Bluetooth: Add BT... |
882 883 884 |
err = -EFAULT; break; |
ad10b1a48 Bluetooth: Add Bl... |
885 886 887 888 889 890 891 892 |
case BT_VOICE: voice.setting = sco_pi(sk)->setting; len = min_t(unsigned int, len, sizeof(voice)); if (copy_to_user(optval, (char *)&voice, len)) err = -EFAULT; break; |
d58daf42d Bluetooth: Prepar... |
893 894 895 896 897 898 899 900 |
default: err = -ENOPROTOOPT; break; } release_sock(sk); return err; } |
fd0b3ff70 Bluetooth: Add pr... |
901 902 903 904 905 906 907 908 909 |
static int sco_sock_shutdown(struct socket *sock, int how) { struct sock *sk = sock->sk; int err = 0; BT_DBG("sock %p, sk %p", sock, sk); if (!sk) return 0; |
1da5537ec Bluetooth: Fix lo... |
910 |
sock_hold(sk); |
fd0b3ff70 Bluetooth: Add pr... |
911 |
lock_sock(sk); |
1da5537ec Bluetooth: Fix lo... |
912 |
|
fd0b3ff70 Bluetooth: Add pr... |
913 914 915 916 |
if (!sk->sk_shutdown) { sk->sk_shutdown = SHUTDOWN_MASK; sco_sock_clear_timer(sk); __sco_sock_close(sk); |
093facf36 Bluetooth: never ... |
917 918 |
if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && !(current->flags & PF_EXITING)) |
fd0b3ff70 Bluetooth: Add pr... |
919 |
err = bt_sock_wait_state(sk, BT_CLOSED, |
be7c2b99e Bluetooth: Fix co... |
920 |
sk->sk_lingertime); |
fd0b3ff70 Bluetooth: Add pr... |
921 |
} |
1da5537ec Bluetooth: Fix lo... |
922 |
|
fd0b3ff70 Bluetooth: Add pr... |
923 |
release_sock(sk); |
1da5537ec Bluetooth: Fix lo... |
924 |
sock_put(sk); |
fd0b3ff70 Bluetooth: Add pr... |
925 926 |
return err; } |
1da177e4c Linux-2.6.12-rc2 |
927 928 929 930 931 932 933 934 935 936 937 |
static int sco_sock_release(struct socket *sock) { struct sock *sk = sock->sk; int err = 0; BT_DBG("sock %p, sk %p", sock, sk); if (!sk) return 0; sco_sock_close(sk); |
093facf36 Bluetooth: never ... |
938 939 |
if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && !(current->flags & PF_EXITING)) { |
1da177e4c Linux-2.6.12-rc2 |
940 941 942 943 944 945 946 947 948 |
lock_sock(sk); err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); release_sock(sk); } sock_orphan(sk); sco_sock_kill(sk); return err; } |
1da177e4c Linux-2.6.12-rc2 |
949 950 |
static void sco_conn_ready(struct sco_conn *conn) { |
735cbc478 Bluetooth: clean ... |
951 952 |
struct sock *parent; struct sock *sk = conn->sk; |
1da177e4c Linux-2.6.12-rc2 |
953 954 |
BT_DBG("conn %p", conn); |
735cbc478 Bluetooth: clean ... |
955 |
if (sk) { |
1da177e4c Linux-2.6.12-rc2 |
956 957 958 959 960 961 |
sco_sock_clear_timer(sk); bh_lock_sock(sk); sk->sk_state = BT_CONNECTED; sk->sk_state_change(sk); bh_unlock_sock(sk); } else { |
405280887 Bluetooth: Reduce... |
962 |
sco_conn_lock(conn); |
2c501cdd6 Bluetooth: Fix cr... |
963 964 965 966 |
if (!conn->hcon) { sco_conn_unlock(conn); return; } |
041987cff Bluetooth: Use SC... |
967 |
parent = sco_get_sock_listen(&conn->hcon->src); |
405280887 Bluetooth: Reduce... |
968 969 970 971 |
if (!parent) { sco_conn_unlock(conn); return; } |
1da177e4c Linux-2.6.12-rc2 |
972 973 |
bh_lock_sock(parent); |
b9dbdbc1f Bluetooth: Trivia... |
974 |
sk = sco_sock_alloc(sock_net(parent), NULL, |
11aa9c28b net: Pass kern fr... |
975 |
BTPROTO_SCO, GFP_ATOMIC, 0); |
1da177e4c Linux-2.6.12-rc2 |
976 977 |
if (!sk) { bh_unlock_sock(parent); |
405280887 Bluetooth: Reduce... |
978 979 |
sco_conn_unlock(conn); return; |
1da177e4c Linux-2.6.12-rc2 |
980 981 982 |
} sco_sock_init(sk, parent); |
eea963641 Bluetooth: Store ... |
983 984 |
bacpy(&sco_pi(sk)->src, &conn->hcon->src); bacpy(&sco_pi(sk)->dst, &conn->hcon->dst); |
1da177e4c Linux-2.6.12-rc2 |
985 986 987 |
hci_conn_hold(conn->hcon); __sco_chan_add(conn, sk, parent); |
20714bfef Bluetooth: Implem... |
988 989 990 991 |
if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) sk->sk_state = BT_CONNECT2; else sk->sk_state = BT_CONNECTED; |
1da177e4c Linux-2.6.12-rc2 |
992 993 |
/* Wake up parent */ |
676d23690 net: Fix use afte... |
994 |
parent->sk_data_ready(parent); |
1da177e4c Linux-2.6.12-rc2 |
995 996 |
bh_unlock_sock(parent); |
1da177e4c Linux-2.6.12-rc2 |
997 |
|
405280887 Bluetooth: Reduce... |
998 999 |
sco_conn_unlock(conn); } |
1da177e4c Linux-2.6.12-rc2 |
1000 1001 1002 |
} /* ----- SCO interface with lower layer (HCI) ----- */ |
20714bfef Bluetooth: Implem... |
1003 |
int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) |
1da177e4c Linux-2.6.12-rc2 |
1004 |
{ |
fc5fef615 Bluetooth: Remove... |
1005 |
struct sock *sk; |
71aeeaa1f Bluetooth: Reject... |
1006 |
int lm = 0; |
6ed93dc64 Bluetooth: Use %p... |
1007 |
BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr); |
1da177e4c Linux-2.6.12-rc2 |
1008 |
|
71aeeaa1f Bluetooth: Reject... |
1009 1010 |
/* Find listening sockets */ read_lock(&sco_sk_list.lock); |
b67bfe0d4 hlist: drop the n... |
1011 |
sk_for_each(sk, &sco_sk_list.head) { |
71aeeaa1f Bluetooth: Reject... |
1012 1013 |
if (sk->sk_state != BT_LISTEN) continue; |
eea963641 Bluetooth: Store ... |
1014 1015 |
if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) || !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) { |
71aeeaa1f Bluetooth: Reject... |
1016 |
lm |= HCI_LM_ACCEPT; |
20714bfef Bluetooth: Implem... |
1017 1018 1019 |
if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) *flags |= HCI_PROTO_DEFER; |
71aeeaa1f Bluetooth: Reject... |
1020 1021 1022 1023 1024 1025 |
break; } } read_unlock(&sco_sk_list.lock); return lm; |
1da177e4c Linux-2.6.12-rc2 |
1026 |
} |
539c496d8 Bluetooth: Conver... |
1027 |
static void sco_connect_cfm(struct hci_conn *hcon, __u8 status) |
1da177e4c Linux-2.6.12-rc2 |
1028 |
{ |
539c496d8 Bluetooth: Conver... |
1029 1030 |
if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) return; |
6ed93dc64 Bluetooth: Use %p... |
1031 |
BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status); |
539c496d8 Bluetooth: Conver... |
1032 |
|
1da177e4c Linux-2.6.12-rc2 |
1033 1034 |
if (!status) { struct sco_conn *conn; |
519e42b38 Bluetooth: Remove... |
1035 |
conn = sco_conn_add(hcon); |
1da177e4c Linux-2.6.12-rc2 |
1036 1037 |
if (conn) sco_conn_ready(conn); |
8e87d1425 [NET] BLUETOOTH: ... |
1038 |
} else |
e175072f3 Bluetooth: Rename... |
1039 |
sco_conn_del(hcon, bt_to_errno(status)); |
1da177e4c Linux-2.6.12-rc2 |
1040 |
} |
3a6d576be Bluetooth: Conver... |
1041 |
static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason) |
1da177e4c Linux-2.6.12-rc2 |
1042 |
{ |
3a6d576be Bluetooth: Conver... |
1043 1044 |
if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) return; |
1da177e4c Linux-2.6.12-rc2 |
1045 |
BT_DBG("hcon %p reason %d", hcon, reason); |
e175072f3 Bluetooth: Rename... |
1046 |
sco_conn_del(hcon, bt_to_errno(reason)); |
1da177e4c Linux-2.6.12-rc2 |
1047 |
} |
9b4c33364 Bluetooth: Make l... |
1048 |
void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) |
1da177e4c Linux-2.6.12-rc2 |
1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 |
{ struct sco_conn *conn = hcon->sco_data; if (!conn) goto drop; BT_DBG("conn %p len %d", conn, skb->len); if (skb->len) { sco_recv_frame(conn, skb); |
9b4c33364 Bluetooth: Make l... |
1059 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1060 1061 1062 |
} drop: |
8e87d1425 [NET] BLUETOOTH: ... |
1063 |
kfree_skb(skb); |
1da177e4c Linux-2.6.12-rc2 |
1064 |
} |
539c496d8 Bluetooth: Conver... |
1065 1066 1067 |
static struct hci_cb sco_cb = { .name = "SCO", .connect_cfm = sco_connect_cfm, |
3a6d576be Bluetooth: Conver... |
1068 |
.disconn_cfm = sco_disconn_cfm, |
539c496d8 Bluetooth: Conver... |
1069 |
}; |
aef7d97cc Bluetooth: Conver... |
1070 |
static int sco_debugfs_show(struct seq_file *f, void *p) |
1da177e4c Linux-2.6.12-rc2 |
1071 1072 |
{ struct sock *sk; |
1da177e4c Linux-2.6.12-rc2 |
1073 |
|
ee65d19e2 Bluetooth: Remove... |
1074 |
read_lock(&sco_sk_list.lock); |
1da177e4c Linux-2.6.12-rc2 |
1075 |
|
b67bfe0d4 hlist: drop the n... |
1076 |
sk_for_each(sk, &sco_sk_list.head) { |
eea963641 Bluetooth: Store ... |
1077 1078 1079 |
seq_printf(f, "%pMR %pMR %d ", &sco_pi(sk)->src, &sco_pi(sk)->dst, sk->sk_state); |
be9d12273 [Bluetooth]: Remo... |
1080 |
} |
1da177e4c Linux-2.6.12-rc2 |
1081 |
|
ee65d19e2 Bluetooth: Remove... |
1082 |
read_unlock(&sco_sk_list.lock); |
1da177e4c Linux-2.6.12-rc2 |
1083 |
|
aef7d97cc Bluetooth: Conver... |
1084 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
1085 |
} |
aef7d97cc Bluetooth: Conver... |
1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 |
static int sco_debugfs_open(struct inode *inode, struct file *file) { return single_open(file, sco_debugfs_show, inode->i_private); } static const struct file_operations sco_debugfs_fops = { .open = sco_debugfs_open, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; static struct dentry *sco_debugfs; |
1da177e4c Linux-2.6.12-rc2 |
1099 |
|
90ddc4f04 [NET]: move struc... |
1100 |
static const struct proto_ops sco_sock_ops = { |
1da177e4c Linux-2.6.12-rc2 |
1101 1102 1103 1104 1105 1106 1107 1108 1109 |
.family = PF_BLUETOOTH, .owner = THIS_MODULE, .release = sco_sock_release, .bind = sco_sock_bind, .connect = sco_sock_connect, .listen = sco_sock_listen, .accept = sco_sock_accept, .getname = sco_sock_getname, .sendmsg = sco_sock_sendmsg, |
20714bfef Bluetooth: Implem... |
1110 |
.recvmsg = sco_sock_recvmsg, |
1da177e4c Linux-2.6.12-rc2 |
1111 |
.poll = bt_sock_poll, |
3241ad820 [Bluetooth] Add t... |
1112 |
.ioctl = bt_sock_ioctl, |
1da177e4c Linux-2.6.12-rc2 |
1113 1114 |
.mmap = sock_no_mmap, .socketpair = sock_no_socketpair, |
fd0b3ff70 Bluetooth: Add pr... |
1115 |
.shutdown = sco_sock_shutdown, |
1da177e4c Linux-2.6.12-rc2 |
1116 1117 1118 |
.setsockopt = sco_sock_setsockopt, .getsockopt = sco_sock_getsockopt }; |
ec1b4cf74 net: mark net_pro... |
1119 |
static const struct net_proto_family sco_sock_family_ops = { |
1da177e4c Linux-2.6.12-rc2 |
1120 1121 1122 1123 |
.family = PF_BLUETOOTH, .owner = THIS_MODULE, .create = sco_sock_create, }; |
642745184 Bluetooth: Merge ... |
1124 |
int __init sco_init(void) |
1da177e4c Linux-2.6.12-rc2 |
1125 1126 |
{ int err; |
15762fa77 Bluetooth: Add BU... |
1127 |
BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr)); |
1da177e4c Linux-2.6.12-rc2 |
1128 1129 1130 1131 1132 1133 1134 1135 1136 |
err = proto_register(&sco_proto, 0); if (err < 0) return err; err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops); if (err < 0) { BT_ERR("SCO socket registration failed"); goto error; } |
b03166152 bluetooth: kill u... |
1137 |
err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL); |
de9b9212c Bluetooth: Added ... |
1138 1139 1140 1141 1142 |
if (err < 0) { BT_ERR("Failed to create SCO proc file"); bt_sock_unregister(BTPROTO_SCO); goto error; } |
1da177e4c Linux-2.6.12-rc2 |
1143 |
BT_INFO("SCO socket layer initialized"); |
539c496d8 Bluetooth: Conver... |
1144 |
hci_register_cb(&sco_cb); |
1120e4bfa Bluetooth: Use IS... |
1145 1146 1147 1148 1149 |
if (IS_ERR_OR_NULL(bt_debugfs)) return 0; sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs, NULL, &sco_debugfs_fops); |
1da177e4c Linux-2.6.12-rc2 |
1150 1151 1152 1153 1154 1155 |
return 0; error: proto_unregister(&sco_proto); return err; } |
0402d9f23 Bluetooth: fix sc... |
1156 |
void sco_exit(void) |
1da177e4c Linux-2.6.12-rc2 |
1157 |
{ |
de9b9212c Bluetooth: Added ... |
1158 |
bt_procfs_cleanup(&init_net, "sco"); |
aef7d97cc Bluetooth: Conver... |
1159 |
debugfs_remove(sco_debugfs); |
1da177e4c Linux-2.6.12-rc2 |
1160 |
|
539c496d8 Bluetooth: Conver... |
1161 |
hci_unregister_cb(&sco_cb); |
5e9d7f868 Bluetooth: discar... |
1162 |
bt_sock_unregister(BTPROTO_SCO); |
1da177e4c Linux-2.6.12-rc2 |
1163 |
|
1da177e4c Linux-2.6.12-rc2 |
1164 1165 |
proto_unregister(&sco_proto); } |
7cb127d5b [Bluetooth] Add o... |
1166 1167 |
module_param(disable_esco, bool, 0644); MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation"); |