Bluetooth: Create __l2cap_chan_close()

This is actually __l2cap_sock_close() renamed to __l2cap_chan_close().
At a first look it may not make sense, but with the further cleanups that
will come it will.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index d09c9b1..ed75e65 100644 (file)
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -446,7 +446,6 @@ extern int disable_ertm;
 int l2cap_init_sockets(void);
 void l2cap_cleanup_sockets(void);
 
-void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len, void *data);
 void __l2cap_connect_rsp_defer(struct l2cap_chan *chan);
 int __l2cap_wait_ack(struct sock *sk);
 
@@ -463,14 +462,12 @@ int l2cap_add_scid(struct l2cap_chan *chan,  __u16 scid);
 
 void l2cap_sock_set_timer(struct sock *sk, long timeout);
 void l2cap_sock_clear_timer(struct sock *sk);
-void __l2cap_sock_close(struct sock *sk, int reason);
 void l2cap_sock_kill(struct sock *sk);
 void l2cap_sock_init(struct sock *sk, struct sock *parent);
 struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock,
                                                        int proto, gfp_t prio);
-void l2cap_send_disconn_req(struct l2cap_conn *conn, struct l2cap_chan *chan, int err);
 struct l2cap_chan *l2cap_chan_create(struct sock *sk);
-void l2cap_chan_del(struct l2cap_chan *chan, int err);
+void __l2cap_chan_close(struct l2cap_chan *chan, int reason);
 void l2cap_chan_destroy(struct l2cap_chan *chan);
 int l2cap_chan_connect(struct l2cap_chan *chan);
 

diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index af1bc30..14c760c 100644 (file)
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -69,7 +69,11 @@ static void l2cap_busy_work(struct work_struct *work);
 
 static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn,
                                u8 code, u8 ident, u16 dlen, void *data);
+static void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len,
+                                                               void *data);
 static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data);
+static void l2cap_send_disconn_req(struct l2cap_conn *conn,
+                               struct l2cap_chan *chan, int err);
 
 static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb);
 
@@ -271,7 +275,7 @@ static void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan)
 
 /* Delete channel.
  * Must be called on the locked socket. */
-void l2cap_chan_del(struct l2cap_chan *chan, int err)
+static void l2cap_chan_del(struct l2cap_chan *chan, int err)
 {
        struct sock *sk = chan->sk;
        struct l2cap_conn *conn = chan->conn;
@@ -327,6 +331,87 @@ void l2cap_chan_del(struct l2cap_chan *chan, int err)
        }
 }
 
+/* Must be called on unlocked socket. */
+static void l2cap_chan_close(struct sock *sk)
+{
+       l2cap_sock_clear_timer(sk);
+       lock_sock(sk);
+       __l2cap_chan_close(l2cap_pi(sk)->chan, ECONNRESET);
+       release_sock(sk);
+       l2cap_sock_kill(sk);
+}
+
+static void l2cap_chan_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)))
+               l2cap_chan_close(sk);
+
+       parent->sk_state = BT_CLOSED;
+       sock_set_flag(parent, SOCK_ZAPPED);
+}
+
+void __l2cap_chan_close(struct l2cap_chan *chan, int reason)
+{
+       struct l2cap_conn *conn = chan->conn;
+       struct sock *sk = chan->sk;
+
+       BT_DBG("chan %p state %d socket %p", chan, sk->sk_state, sk->sk_socket);
+
+       switch (sk->sk_state) {
+       case BT_LISTEN:
+               l2cap_chan_cleanup_listen(sk);
+               break;
+
+       case BT_CONNECTED:
+       case BT_CONFIG:
+               if ((sk->sk_type == SOCK_SEQPACKET ||
+                                       sk->sk_type == SOCK_STREAM) &&
+                                       conn->hcon->type == ACL_LINK) {
+                       l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
+                       l2cap_send_disconn_req(conn, chan, reason);
+               } else
+                       l2cap_chan_del(chan, reason);
+               break;
+
+       case BT_CONNECT2:
+               if ((sk->sk_type == SOCK_SEQPACKET ||
+                                       sk->sk_type == SOCK_STREAM) &&
+                                       conn->hcon->type == ACL_LINK) {
+                       struct l2cap_conn_rsp rsp;
+                       __u16 result;
+
+                       if (bt_sk(sk)->defer_setup)
+                               result = L2CAP_CR_SEC_BLOCK;
+                       else
+                               result = L2CAP_CR_BAD_PSM;
+
+                       rsp.scid   = cpu_to_le16(chan->dcid);
+                       rsp.dcid   = cpu_to_le16(chan->scid);
+                       rsp.result = cpu_to_le16(result);
+                       rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
+                       l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_RSP,
+                                                       sizeof(rsp), &rsp);
+               }
+
+               l2cap_chan_del(chan, reason);
+               break;
+
+       case BT_CONNECT:
+       case BT_DISCONN:
+               l2cap_chan_del(chan, reason);
+               break;
+
+       default:
+               sock_set_flag(sk, SOCK_ZAPPED);
+               break;
+       }
+}
+
 static inline u8 l2cap_get_auth_type(struct l2cap_chan *chan)
 {
        struct sock *sk = chan->sk;
@@ -393,7 +478,7 @@ u8 l2cap_get_ident(struct l2cap_conn *conn)
        return id;
 }
 
-void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len, void *data)
+static void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len, void *data)
 {
        struct sk_buff *skb = l2cap_build_cmd(conn, code, ident, len, data);
        u8 flags;
@@ -533,7 +618,7 @@ static inline int l2cap_mode_supported(__u8 mode, __u32 feat_mask)
        }
 }
 
-void l2cap_send_disconn_req(struct l2cap_conn *conn, struct l2cap_chan *chan, int err)
+static void l2cap_send_disconn_req(struct l2cap_conn *conn, struct l2cap_chan *chan, int err)
 {
        struct sock *sk;
        struct l2cap_disconn_req req;
@@ -591,10 +676,10 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
                                        conn->feat_mask)
                                        && chan->conf_state &
                                        L2CAP_CONF_STATE2_DEVICE) {
-                               /* __l2cap_sock_close() calls list_del(chan)
+                               /* __l2cap_chan_close() calls list_del(chan)
                                 * so release the lock */
                                read_unlock_bh(&conn->chan_lock);
-                                __l2cap_sock_close(sk, ECONNRESET);
+                                __l2cap_chan_close(chan, ECONNRESET);
                                read_lock_bh(&conn->chan_lock);
                                bh_unlock_sock(sk);
                                continue;
@@ -3943,7 +4028,7 @@ static inline void l2cap_check_encryption(struct l2cap_chan *chan, u8 encrypt)
                        l2cap_sock_clear_timer(sk);
                        l2cap_sock_set_timer(sk, HZ * 5);
                } else if (chan->sec_level == BT_SECURITY_HIGH)
-                       __l2cap_sock_close(sk, ECONNREFUSED);
+                       __l2cap_chan_close(chan, ECONNREFUSED);
        } else {
                if (chan->sec_level == BT_SECURITY_MEDIUM)
                        l2cap_sock_clear_timer(sk);

diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 18dc988..290130c 100644 (file)
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -58,7 +58,7 @@ static void l2cap_sock_timeout(unsigned long arg)
        else
                reason = ETIMEDOUT;
 
-       __l2cap_sock_close(sk, reason);
+       __l2cap_chan_close(l2cap_pi(sk)->chan, reason);
 
        bh_unlock_sock(sk);
 
@@ -813,87 +813,6 @@ void l2cap_sock_kill(struct sock *sk)
        sock_put(sk);
 }
 
-/* Must be called on unlocked socket. */
-static void l2cap_sock_close(struct sock *sk)
-{
-       l2cap_sock_clear_timer(sk);
-       lock_sock(sk);
-       __l2cap_sock_close(sk, ECONNRESET);
-       release_sock(sk);
-       l2cap_sock_kill(sk);
-}
-
-static void l2cap_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)))
-               l2cap_sock_close(sk);
-
-       parent->sk_state = BT_CLOSED;
-       sock_set_flag(parent, SOCK_ZAPPED);
-}
-
-void __l2cap_sock_close(struct sock *sk, int reason)
-{
-       struct l2cap_chan *chan = l2cap_pi(sk)->chan;
-       struct l2cap_conn *conn = chan->conn;
-
-       BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
-
-       switch (sk->sk_state) {
-       case BT_LISTEN:
-               l2cap_sock_cleanup_listen(sk);
-               break;
-
-       case BT_CONNECTED:
-       case BT_CONFIG:
-               if ((sk->sk_type == SOCK_SEQPACKET ||
-                                       sk->sk_type == SOCK_STREAM) &&
-                                       conn->hcon->type == ACL_LINK) {
-                       l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
-                       l2cap_send_disconn_req(conn, chan, reason);
-               } else
-                       l2cap_chan_del(chan, reason);
-               break;
-
-       case BT_CONNECT2:
-               if ((sk->sk_type == SOCK_SEQPACKET ||
-                                       sk->sk_type == SOCK_STREAM) &&
-                                       conn->hcon->type == ACL_LINK) {
-                       struct l2cap_conn_rsp rsp;
-                       __u16 result;
-
-                       if (bt_sk(sk)->defer_setup)
-                               result = L2CAP_CR_SEC_BLOCK;
-                       else
-                               result = L2CAP_CR_BAD_PSM;
-
-                       rsp.scid   = cpu_to_le16(chan->dcid);
-                       rsp.dcid   = cpu_to_le16(chan->scid);
-                       rsp.result = cpu_to_le16(result);
-                       rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
-                       l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_RSP,
-                                                       sizeof(rsp), &rsp);
-               }
-
-               l2cap_chan_del(chan, reason);
-               break;
-
-       case BT_CONNECT:
-       case BT_DISCONN:
-               l2cap_chan_del(chan, reason);
-               break;
-
-       default:
-               sock_set_flag(sk, SOCK_ZAPPED);
-               break;
-       }
-}
-
 static int l2cap_sock_shutdown(struct socket *sock, int how)
 {
        struct sock *sk = sock->sk;
@@ -912,7 +831,7 @@ static int l2cap_sock_shutdown(struct socket *sock, int how)
 
                sk->sk_shutdown = SHUTDOWN_MASK;
                l2cap_sock_clear_timer(sk);
-               __l2cap_sock_close(sk, 0);
+               __l2cap_chan_close(chan, 0);
 
                if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
                        err = bt_sock_wait_state(sk, BT_CLOSED,