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Bluetooth: Refactor L2CAP channel allocation

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If the allocation happens at l2cap_sock_create() will be able to use the
struct l2cap_chan to store channel info that comes from the user via
setsockopt.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Gustavo F. Padovan 2011-04-08 15:40:02 -03:00
parent 828d7d7b19
commit 5d41ce1dd9
3 changed files with 19 additions and 18 deletions
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3
include/net/bluetooth/l2cap.h
View File

@ -465,7 +465,8 @@ void l2cap_sock_init(struct sock *sk, struct sock *parent);
struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock,
int proto, gfp_t prio); int proto, gfp_t prio);
void l2cap_send_disconn_req(struct l2cap_conn *conn, struct l2cap_chan *chan, int err); void l2cap_send_disconn_req(struct l2cap_conn *conn, struct l2cap_chan *chan, int err);
struct l2cap_chan *l2cap_chan_alloc(struct sock *sk);
void l2cap_chan_del(struct l2cap_chan *chan, int err); void l2cap_chan_del(struct l2cap_chan *chan, int err);
int l2cap_do_connect(struct sock *sk); int l2cap_do_connect(struct l2cap_chan *chan);
#endif /* __L2CAP_H */ #endif /* __L2CAP_H */

23
net/bluetooth/l2cap_core.c
View File

@ -149,7 +149,7 @@ static u16 l2cap_alloc_cid(struct l2cap_conn *conn)
return 0; return 0;
} }
static struct l2cap_chan *l2cap_chan_alloc(struct sock *sk) struct l2cap_chan *l2cap_chan_alloc(struct sock *sk)
{ {
struct l2cap_chan *chan; struct l2cap_chan *chan;
@ -648,6 +648,8 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn)
goto clean; goto clean;
} }
l2cap_pi(sk)->chan = chan;
write_lock_bh(&conn->chan_lock); write_lock_bh(&conn->chan_lock);
hci_conn_hold(conn->hcon); hci_conn_hold(conn->hcon);
@ -661,8 +663,6 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn)
__l2cap_chan_add(conn, chan); __l2cap_chan_add(conn, chan);
l2cap_pi(sk)->chan = chan;
l2cap_sock_set_timer(sk, sk->sk_sndtimeo); l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
sk->sk_state = BT_CONNECTED; sk->sk_state = BT_CONNECTED;
@ -847,12 +847,12 @@ static struct sock *l2cap_get_sock_by_psm(int state, __le16 psm, bdaddr_t *src)
return node ? sk : sk1; return node ? sk : sk1;
} }
int l2cap_do_connect(struct sock *sk) int l2cap_do_connect(struct l2cap_chan *chan)
{ {
struct sock *sk = chan->sk;
bdaddr_t *src = &bt_sk(sk)->src; bdaddr_t *src = &bt_sk(sk)->src;
bdaddr_t *dst = &bt_sk(sk)->dst; bdaddr_t *dst = &bt_sk(sk)->dst;
struct l2cap_conn *conn; struct l2cap_conn *conn;
struct l2cap_chan *chan;
struct hci_conn *hcon; struct hci_conn *hcon;
struct hci_dev *hdev; struct hci_dev *hdev;
__u8 auth_type; __u8 auth_type;
@ -888,20 +888,11 @@ int l2cap_do_connect(struct sock *sk)
goto done; goto done;
} }
chan = l2cap_chan_alloc(sk);
if (!chan) {
hci_conn_put(hcon);
err = -ENOMEM;
goto done;
}
/* Update source addr of the socket */ /* Update source addr of the socket */
bacpy(src, conn->src); bacpy(src, conn->src);
l2cap_chan_add(conn, chan); l2cap_chan_add(conn, chan);
l2cap_pi(sk)->chan = chan;
sk->sk_state = BT_CONNECT; sk->sk_state = BT_CONNECT;
l2cap_sock_set_timer(sk, sk->sk_sndtimeo); l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
@ -2076,6 +2067,8 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
goto response; goto response;
} }
l2cap_pi(sk)->chan = chan;
write_lock_bh(&conn->chan_lock); write_lock_bh(&conn->chan_lock);
/* Check if we already have channel with that dcid */ /* Check if we already have channel with that dcid */
@ -2098,8 +2091,6 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
__l2cap_chan_add(conn, chan); __l2cap_chan_add(conn, chan);
l2cap_pi(sk)->chan = chan;
dcid = l2cap_pi(sk)->scid; dcid = l2cap_pi(sk)->scid;
l2cap_sock_set_timer(sk, sk->sk_sndtimeo); l2cap_sock_set_timer(sk, sk->sk_sndtimeo);

11
net/bluetooth/l2cap_sock.c
View File

@ -229,7 +229,7 @@ static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int al
l2cap_pi(sk)->psm = la.l2_psm; l2cap_pi(sk)->psm = la.l2_psm;
l2cap_pi(sk)->dcid = la.l2_cid; l2cap_pi(sk)->dcid = la.l2_cid;
err = l2cap_do_connect(sk); err = l2cap_do_connect(l2cap_pi(sk)->chan);
if (err) if (err)
goto done; goto done;
@ -1054,6 +1054,7 @@ static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol,
int kern) int kern)
{ {
struct sock *sk; struct sock *sk;
struct l2cap_chan *chan;
BT_DBG("sock %p", sock); BT_DBG("sock %p", sock);
@ -1072,6 +1073,14 @@ static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol,
if (!sk) if (!sk)
return -ENOMEM; return -ENOMEM;
chan = l2cap_chan_alloc(sk);
if (!chan) {
l2cap_sock_kill(sk);
return -ENOMEM;
}
l2cap_pi(sk)->chan = chan;
l2cap_sock_init(sk, NULL); l2cap_sock_init(sk, NULL);
return 0; return 0;
} }