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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>
This commit is contained in:
Gustavo F. Padovan 2011-04-28 17:55:53 -03:00
parent 37e1c55de7
commit 4519de9a04
3 changed files with 94 additions and 93 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/net/bluetooth/l2cap.h
View File

@ -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);

97
net/bluetooth/l2cap_core.c
View File

@ -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);

85
net/bluetooth/l2cap_sock.c
View File

@ -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,