Bluetooth: Add global deferred socket parameter

[safe/jmp/linux-2.6] / net / bluetooth / af_bluetooth.c

diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index c7228cf..7c0031f 100644 (file)
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -36,25 +36,62 @@
 #include <linux/init.h>
 #include <linux/poll.h>
 #include <net/sock.h>
-
-#if defined(CONFIG_KMOD)
+#include <asm/ioctls.h>
 #include <linux/kmod.h>
-#endif
 
 #include <net/bluetooth/bluetooth.h>
 
-#ifndef CONFIG_BT_SOCK_DEBUG
-#undef  BT_DBG
-#define BT_DBG(D...)
-#endif
-
-#define VERSION "2.11"
+#define VERSION "2.14"
 
 /* Bluetooth sockets */
 #define BT_MAX_PROTO   8
 static struct net_proto_family *bt_proto[BT_MAX_PROTO];
 static DEFINE_RWLOCK(bt_proto_lock);
 
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+static struct lock_class_key bt_lock_key[BT_MAX_PROTO];
+static const char *bt_key_strings[BT_MAX_PROTO] = {
+       "sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP",
+       "sk_lock-AF_BLUETOOTH-BTPROTO_HCI",
+       "sk_lock-AF_BLUETOOTH-BTPROTO_SCO",
+       "sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM",
+       "sk_lock-AF_BLUETOOTH-BTPROTO_BNEP",
+       "sk_lock-AF_BLUETOOTH-BTPROTO_CMTP",
+       "sk_lock-AF_BLUETOOTH-BTPROTO_HIDP",
+       "sk_lock-AF_BLUETOOTH-BTPROTO_AVDTP",
+};
+
+static struct lock_class_key bt_slock_key[BT_MAX_PROTO];
+static const char *bt_slock_key_strings[BT_MAX_PROTO] = {
+       "slock-AF_BLUETOOTH-BTPROTO_L2CAP",
+       "slock-AF_BLUETOOTH-BTPROTO_HCI",
+       "slock-AF_BLUETOOTH-BTPROTO_SCO",
+       "slock-AF_BLUETOOTH-BTPROTO_RFCOMM",
+       "slock-AF_BLUETOOTH-BTPROTO_BNEP",
+       "slock-AF_BLUETOOTH-BTPROTO_CMTP",
+       "slock-AF_BLUETOOTH-BTPROTO_HIDP",
+       "slock-AF_BLUETOOTH-BTPROTO_AVDTP",
+};
+
+static inline void bt_sock_reclassify_lock(struct socket *sock, int proto)
+{
+       struct sock *sk = sock->sk;
+
+       if (!sk)
+               return;
+
+       BUG_ON(sock_owned_by_user(sk));
+
+       sock_lock_init_class_and_name(sk,
+                       bt_slock_key_strings[proto], &bt_slock_key[proto],
+                               bt_key_strings[proto], &bt_lock_key[proto]);
+}
+#else
+static inline void bt_sock_reclassify_lock(struct socket *sock, int proto)
+{
+}
+#endif
+
 int bt_sock_register(int proto, struct net_proto_family *ops)
 {
        int err = 0;
@@ -95,25 +132,26 @@ int bt_sock_unregister(int proto)
 }
 EXPORT_SYMBOL(bt_sock_unregister);
 
-static int bt_sock_create(struct socket *sock, int proto)
+static int bt_sock_create(struct net *net, struct socket *sock, int proto)
 {
        int err;
 
+       if (net != &init_net)
+               return -EAFNOSUPPORT;
+
        if (proto < 0 || proto >= BT_MAX_PROTO)
                return -EINVAL;
 
-#if defined(CONFIG_KMOD)
-       if (!bt_proto[proto]) {
+       if (!bt_proto[proto])
                request_module("bt-proto-%d", proto);
-       }
-#endif
 
        err = -EPROTONOSUPPORT;
 
        read_lock(&bt_proto_lock);
 
        if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) {
-               err = bt_proto[proto]->create(sock, proto);
+               err = bt_proto[proto]->create(net, sock, proto);
+               bt_sock_reclassify_lock(sock, proto);
                module_put(bt_proto[proto]->owner);
        }
 
@@ -179,7 +217,8 @@ struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock)
                        continue;
                }
 
-               if (sk->sk_state == BT_CONNECTED || !newsock) {
+               if (sk->sk_state == BT_CONNECTED || !newsock ||
+                                               bt_sk(parent)->defer_setup) {
                        bt_accept_unlink(sk);
                        if (newsock)
                                sock_graft(sk, newsock);
@@ -194,7 +233,7 @@ struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock)
 EXPORT_SYMBOL(bt_accept_dequeue);
 
 int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
-       struct msghdr *msg, size_t len, int flags)
+                               struct msghdr *msg, size_t len, int flags)
 {
        int noblock = flags & MSG_DONTWAIT;
        struct sock *sk = sock->sk;
@@ -202,7 +241,7 @@ int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
        size_t copied;
        int err;
 
-       BT_DBG("sock %p sk %p len %d", sock, sk, len);
+       BT_DBG("sock %p sk %p len %zu", sock, sk, len);
 
        if (flags & (MSG_OOB))
                return -EOPNOTSUPP;
@@ -221,8 +260,10 @@ int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
                copied = len;
        }
 
-       skb->h.raw = skb->data;
+       skb_reset_transport_header(skb);
        err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
+       if (err == 0)
+               sock_recv_timestamp(msg, sk, skb);
 
        skb_free_datagram(sk, skb);
 
@@ -235,6 +276,9 @@ static inline unsigned int bt_accept_poll(struct sock *parent)
        struct list_head *p, *n;
        struct sock *sk;
 
+       if (bt_sk(parent)->defer_setup)
+               return POLLIN | POLLRDNORM;
+
        list_for_each_safe(p, n, &bt_sk(parent)->accept_q) {
                sk = (struct sock *) list_entry(p, struct bt_sock, accept_q);
                if (sk->sk_state == BT_CONNECTED)
@@ -286,6 +330,54 @@ unsigned int bt_sock_poll(struct file * file, struct socket *sock, poll_table *w
 }
 EXPORT_SYMBOL(bt_sock_poll);
 
+int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+       struct sock *sk = sock->sk;
+       struct sk_buff *skb;
+       long amount;
+       int err;
+
+       BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg);
+
+       switch (cmd) {
+       case TIOCOUTQ:
+               if (sk->sk_state == BT_LISTEN)
+                       return -EINVAL;
+
+               amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
+               if (amount < 0)
+                       amount = 0;
+               err = put_user(amount, (int __user *) arg);
+               break;
+
+       case TIOCINQ:
+               if (sk->sk_state == BT_LISTEN)
+                       return -EINVAL;
+
+               lock_sock(sk);
+               skb = skb_peek(&sk->sk_receive_queue);
+               amount = skb ? skb->len : 0;
+               release_sock(sk);
+               err = put_user(amount, (int __user *) arg);
+               break;
+
+       case SIOCGSTAMP:
+               err = sock_get_timestamp(sk, (struct timeval __user *) arg);
+               break;
+
+       case SIOCGSTAMPNS:
+               err = sock_get_timestampns(sk, (struct timespec __user *) arg);
+               break;
+
+       default:
+               err = -ENOIOCTLCMD;
+               break;
+       }
+
+       return err;
+}
+EXPORT_SYMBOL(bt_sock_ioctl);
+
 int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo)
 {
        DECLARE_WAITQUEUE(wait, current);
@@ -362,7 +454,7 @@ static void __exit bt_exit(void)
 subsys_initcall(bt_init);
 module_exit(bt_exit);
 
-MODULE_AUTHOR("Maxim Krasnyansky <maxk@qualcomm.com>, Marcel Holtmann <marcel@holtmann.org>");
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
 MODULE_DESCRIPTION("Bluetooth Core ver " VERSION);
 MODULE_VERSION(VERSION);
 MODULE_LICENSE("GPL");