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Bluetooth: Add l2cap_add_psm() and l2cap_add_scid()

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The intention is to get rid of the l2cap_sk_list usage inside
l2cap_core.c. l2cap_sk_list will soon be replaced by a list that does not
depend on socket usage.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Gustavo F. Padovan 2011-04-18 18:38:43 -03:00
parent 7cbc9bd995
commit 9e4425fff9
3 changed files with 60 additions and 34 deletions
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4
include/net/bluetooth/l2cap.h
View File

@ -458,6 +458,10 @@ void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb);
void l2cap_streaming_send(struct l2cap_chan *chan);
int l2cap_ertm_send(struct l2cap_chan *chan);
struct sock *__l2cap_get_sock_by_addr(__le16 psm, bdaddr_t *src);
int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm);
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);

44
net/bluetooth/l2cap_core.c
View File

@ -135,6 +135,50 @@ static inline struct l2cap_chan *l2cap_get_chan_by_ident(struct l2cap_conn *conn
return c;
}
struct sock *__l2cap_get_sock_by_addr(__le16 psm, bdaddr_t *src)
{
struct sock *sk;
struct hlist_node *node;
sk_for_each(sk, node, &l2cap_sk_list.head) {
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
if (chan->sport == psm && !bacmp(&bt_sk(sk)->src, src))
goto found;
}
sk = NULL;
found:
return sk;
}
int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm)
{
write_lock_bh(&l2cap_sk_list.lock);
if (__l2cap_get_sock_by_addr(psm, src)) {
write_unlock_bh(&l2cap_sk_list.lock);
return -EADDRINUSE;
}
chan->psm = psm;
chan->sport = psm;
write_unlock_bh(&l2cap_sk_list.lock);
return 0;
}
int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid)
{
write_lock_bh(&l2cap_sk_list.lock);
chan->scid = scid;
write_unlock_bh(&l2cap_sk_list.lock);
return 0;
}
static u16 l2cap_alloc_cid(struct l2cap_conn *conn)
{
u16 cid = L2CAP_CID_DYN_START;

46
net/bluetooth/l2cap_sock.c
View File

@ -78,22 +78,6 @@ void l2cap_sock_clear_timer(struct sock *sk)
sk_stop_timer(sk, &sk->sk_timer);
}
static struct sock *__l2cap_get_sock_by_addr(__le16 psm, bdaddr_t *src)
{
struct sock *sk;
struct hlist_node *node;
sk_for_each(sk, node, &l2cap_sk_list.head) {
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
if (chan->sport == psm && !bacmp(&bt_sk(sk)->src, src))
goto found;
}
sk = NULL;
found:
return sk;
}
static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
{
struct sock *sk = sock->sk;
@ -136,26 +120,20 @@ static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
}
}
write_lock_bh(&l2cap_sk_list.lock);
if (la.l2_psm && __l2cap_get_sock_by_addr(la.l2_psm, &la.l2_bdaddr)) {
err = -EADDRINUSE;
} else {
/* Save source address */
bacpy(&bt_sk(sk)->src, &la.l2_bdaddr);
chan->psm = la.l2_psm;
chan->sport = la.l2_psm;
sk->sk_state = BT_BOUND;
if (__le16_to_cpu(la.l2_psm) == 0x0001 ||
__le16_to_cpu(la.l2_psm) == 0x0003)
chan->sec_level = BT_SECURITY_SDP;
}
if (la.l2_cid)
chan->scid = la.l2_cid;
err = l2cap_add_scid(chan, la.l2_cid);
else
err = l2cap_add_psm(chan, &la.l2_bdaddr, la.l2_psm);
write_unlock_bh(&l2cap_sk_list.lock);
if (err < 0)
goto done;
if (__le16_to_cpu(la.l2_psm) == 0x0001 ||
__le16_to_cpu(la.l2_psm) == 0x0003)
chan->sec_level = BT_SECURITY_SDP;
bacpy(&bt_sk(sk)->src, &la.l2_bdaddr);
sk->sk_state = BT_BOUND;
done:
release_sock(sk);