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Bluetooth: Disconnect early if mode is not supported

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When mode is mandatory we shall not send connect request and report this
to the userspace as well.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Gustavo F. Padovan 2010-06-07 20:54:45 -03:00 committed by Marcel Holtmann
parent 2ba13ed678
commit cf6c2c0b9f
2 changed files with 45 additions and 16 deletions
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5
include/net/bluetooth/l2cap.h
View File

@ -287,6 +287,11 @@ struct l2cap_conn {
struct l2cap_chan_list chan_list;
};
struct sock_del_list {
struct sock *sk;
struct list_head list;
};
#define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
#define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
#define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08

56
net/bluetooth/l2cap.c
View File

@ -456,6 +456,22 @@ static void l2cap_do_start(struct sock *sk)
}
}
static inline int l2cap_mode_supported(__u8 mode, __u32 feat_mask)
{
u32 local_feat_mask = l2cap_feat_mask;
if (enable_ertm)
local_feat_mask |= L2CAP_FEAT_ERTM | L2CAP_FEAT_STREAMING;
switch (mode) {
case L2CAP_MODE_ERTM:
return L2CAP_FEAT_ERTM & feat_mask & local_feat_mask;
case L2CAP_MODE_STREAMING:
return L2CAP_FEAT_STREAMING & feat_mask & local_feat_mask;
default:
return 0x00;
}
}
static void l2cap_send_disconn_req(struct l2cap_conn *conn, struct sock *sk, int err)
{
struct l2cap_disconn_req req;
@ -484,10 +500,13 @@ static void l2cap_send_disconn_req(struct l2cap_conn *conn, struct sock *sk, int
static void l2cap_conn_start(struct l2cap_conn *conn)
{
struct l2cap_chan_list *l = &conn->chan_list;
struct sock_del_list del, *tmp1, *tmp2;
struct sock *sk;
BT_DBG("conn %p", conn);
INIT_LIST_HEAD(&del.list);
read_lock(&l->lock);
for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) {
@ -503,6 +522,19 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
if (l2cap_check_security(sk) &&
__l2cap_no_conn_pending(sk)) {
struct l2cap_conn_req req;
if (!l2cap_mode_supported(l2cap_pi(sk)->mode,
conn->feat_mask)
&& l2cap_pi(sk)->conf_state &
L2CAP_CONF_STATE2_DEVICE) {
tmp1 = kzalloc(sizeof(struct srej_list),
GFP_ATOMIC);
tmp1->sk = sk;
list_add_tail(&tmp1->list, &del.list);
bh_unlock_sock(sk);
continue;
}
req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
req.psm = l2cap_pi(sk)->psm;
@ -542,6 +574,14 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
}
read_unlock(&l->lock);
list_for_each_entry_safe(tmp1, tmp2, &del.list, list) {
bh_lock_sock(tmp1->sk);
__l2cap_sock_close(tmp1->sk, ECONNRESET);
bh_unlock_sock(tmp1->sk);
list_del(&tmp1->list);
kfree(tmp1);
}
}
static void l2cap_conn_ready(struct l2cap_conn *conn)
@ -2429,22 +2469,6 @@ static inline void l2cap_ertm_init(struct sock *sk)
INIT_WORK(&l2cap_pi(sk)->busy_work, l2cap_busy_work);
}
static int l2cap_mode_supported(__u8 mode, __u32 feat_mask)
{
u32 local_feat_mask = l2cap_feat_mask;
if (enable_ertm)
local_feat_mask |= L2CAP_FEAT_ERTM | L2CAP_FEAT_STREAMING;
switch (mode) {
case L2CAP_MODE_ERTM:
return L2CAP_FEAT_ERTM & feat_mask & local_feat_mask;
case L2CAP_MODE_STREAMING:
return L2CAP_FEAT_STREAMING & feat_mask & local_feat_mask;
default:
return 0x00;
}
}
static inline __u8 l2cap_select_mode(__u8 mode, __u16 remote_feat_mask)
{
switch (mode) {