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Commit fe4128e0 authored by Gustavo F. Padovan's avatar Gustavo F. Padovan
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Bluetooth: Move more vars to struct l2cap_chan 

In this commit, psm, scid and dcid.
Signed-off-by: default avatarGustavo F. Padovan <padovan@profusion.mobi>
parent 0c1bc5c6
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Showing with 77 additions and 75 deletions
include/net/bluetooth/l2cap.h
View file @ fe4128e0
......@@ -284,6 +284,9 @@ struct srej_list {
struct l2cap_chan {
struct sock *sk;
__le16 psm;
__u16 dcid;
__u16 scid;
__u16 imtu;
__u16 omtu;
......@@ -382,9 +385,6 @@ struct l2cap_conn {
struct l2cap_pinfo {
struct bt_sock bt;
__le16 psm;
__u16 dcid;
__u16 scid;
struct l2cap_conn *conn;
struct l2cap_chan *chan;
......@@ -450,8 +450,8 @@ void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len, void *d
void __l2cap_connect_rsp_defer(struct sock *sk);
int __l2cap_wait_ack(struct sock *sk);
struct sk_buff *l2cap_create_connless_pdu(struct sock *sk, struct msghdr *msg, size_t len);
struct sk_buff *l2cap_create_basic_pdu(struct sock *sk, struct msghdr *msg, size_t len);
struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len);
struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len);
struct sk_buff *l2cap_create_iframe_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len, u16 control, u16 sdulen);
int l2cap_sar_segment_sdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len);
void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb);
......
net/bluetooth/l2cap_core.c
View file @ fe4128e0
......@@ -80,8 +80,7 @@ static struct l2cap_chan *__l2cap_get_chan_by_dcid(struct l2cap_conn *conn, u16
struct l2cap_chan *c;
list_for_each_entry(c, &conn->chan_l, list) {
struct sock *s = c->sk;
if (l2cap_pi(s)->dcid == cid)
if (c->dcid == cid)
return c;
}
return NULL;
......@@ -93,8 +92,7 @@ static struct l2cap_chan *__l2cap_get_chan_by_scid(struct l2cap_conn *conn, u16
struct l2cap_chan *c;
list_for_each_entry(c, &conn->chan_l, list) {
struct sock *s = c->sk;
if (l2cap_pi(s)->scid == cid)
if (c->scid == cid)
return c;
}
return NULL;
......@@ -167,7 +165,7 @@ static void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan)
struct sock *sk = chan->sk;
BT_DBG("conn %p, psm 0x%2.2x, dcid 0x%4.4x", conn,
l2cap_pi(sk)->psm, l2cap_pi(sk)->dcid);
chan->psm, chan->dcid);
conn->disc_reason = 0x13;
......@@ -177,22 +175,22 @@ static void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan)
if (conn->hcon->type == LE_LINK) {
/* LE connection */
chan->omtu = L2CAP_LE_DEFAULT_MTU;
l2cap_pi(sk)->scid = L2CAP_CID_LE_DATA;
l2cap_pi(sk)->dcid = L2CAP_CID_LE_DATA;
chan->scid = L2CAP_CID_LE_DATA;
chan->dcid = L2CAP_CID_LE_DATA;
} else {
/* Alloc CID for connection-oriented socket */
l2cap_pi(sk)->scid = l2cap_alloc_cid(conn);
chan->scid = l2cap_alloc_cid(conn);
chan->omtu = L2CAP_DEFAULT_MTU;
}
} else if (sk->sk_type == SOCK_DGRAM) {
/* Connectionless socket */
l2cap_pi(sk)->scid = L2CAP_CID_CONN_LESS;
l2cap_pi(sk)->dcid = L2CAP_CID_CONN_LESS;
chan->scid = L2CAP_CID_CONN_LESS;
chan->dcid = L2CAP_CID_CONN_LESS;
chan->omtu = L2CAP_DEFAULT_MTU;
} else {
/* Raw socket can send/recv signalling messages only */
l2cap_pi(sk)->scid = L2CAP_CID_SIGNALING;
l2cap_pi(sk)->dcid = L2CAP_CID_SIGNALING;
chan->scid = L2CAP_CID_SIGNALING;
chan->dcid = L2CAP_CID_SIGNALING;
chan->omtu = L2CAP_DEFAULT_MTU;
}
......@@ -275,7 +273,7 @@ static inline u8 l2cap_get_auth_type(struct l2cap_chan *chan)
default:
return HCI_AT_NO_BONDING;
}
} else if (l2cap_pi(sk)->psm == cpu_to_le16(0x0001)) {
} else if (chan->psm == cpu_to_le16(0x0001)) {
if (chan->sec_level == BT_SECURITY_LOW)
chan->sec_level = BT_SECURITY_SDP;
......@@ -383,7 +381,7 @@ static inline void l2cap_send_sframe(struct l2cap_chan *chan, u16 control)
lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
lh->len = cpu_to_le16(hlen - L2CAP_HDR_SIZE);
lh->cid = cpu_to_le16(pi->dcid);
lh->cid = cpu_to_le16(chan->dcid);
put_unaligned_le16(control, skb_put(skb, 2));
if (chan->fcs == L2CAP_FCS_CRC16) {
......@@ -429,8 +427,8 @@ static void l2cap_do_start(struct l2cap_chan *chan)
if (l2cap_check_security(chan) &&
__l2cap_no_conn_pending(chan)) {
struct l2cap_conn_req req;
req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
req.psm = l2cap_pi(sk)->psm;
req.scid = cpu_to_le16(chan->scid);
req.psm = chan->psm;
chan->ident = l2cap_get_ident(conn);
chan->conf_state |= L2CAP_CONF_CONNECT_PEND;
......@@ -485,8 +483,8 @@ void l2cap_send_disconn_req(struct l2cap_conn *conn, struct l2cap_chan *chan, in
del_timer(&chan->ack_timer);
}
req.dcid = cpu_to_le16(l2cap_pi(sk)->dcid);
req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
req.dcid = cpu_to_le16(chan->dcid);
req.scid = cpu_to_le16(chan->scid);
l2cap_send_cmd(conn, l2cap_get_ident(conn),
L2CAP_DISCONN_REQ, sizeof(req), &req);
......@@ -536,8 +534,8 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
continue;
}
req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
req.psm = l2cap_pi(sk)->psm;
req.scid = cpu_to_le16(chan->scid);
req.psm = chan->psm;
chan->ident = l2cap_get_ident(conn);
chan->conf_state |= L2CAP_CONF_CONNECT_PEND;
......@@ -548,8 +546,8 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
} else if (sk->sk_state == BT_CONNECT2) {
struct l2cap_conn_rsp rsp;
char buf[128];
rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
rsp.scid = cpu_to_le16(chan->dcid);
rsp.dcid = cpu_to_le16(chan->scid);
if (l2cap_check_security(chan)) {
if (bt_sk(sk)->defer_setup) {
......@@ -600,10 +598,12 @@ static struct sock *l2cap_get_sock_by_scid(int state, __le16 cid, bdaddr_t *src)
read_lock(&l2cap_sk_list.lock);
sk_for_each(sk, node, &l2cap_sk_list.head) {
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
if (state && sk->sk_state != state)
continue;
if (l2cap_pi(sk)->scid == cid) {
if (chan->scid == cid) {
/* Exact match. */
if (!bacmp(&bt_sk(sk)->src, src))
break;
......@@ -830,10 +830,12 @@ static struct sock *l2cap_get_sock_by_psm(int state, __le16 psm, bdaddr_t *src)
read_lock(&l2cap_sk_list.lock);
sk_for_each(sk, node, &l2cap_sk_list.head) {
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
if (state && sk->sk_state != state)
continue;
if (l2cap_pi(sk)->psm == psm) {
if (chan->psm == psm) {
/* Exact match. */
if (!bacmp(&bt_sk(sk)->src, src))
break;
......@@ -861,7 +863,7 @@ int l2cap_chan_connect(struct l2cap_chan *chan)
int err;
BT_DBG("%s -> %s psm 0x%2.2x", batostr(src), batostr(dst),
l2cap_pi(sk)->psm);
chan->psm);
hdev = hci_get_route(dst, src);
if (!hdev)
......@@ -871,7 +873,7 @@ int l2cap_chan_connect(struct l2cap_chan *chan)
auth_type = l2cap_get_auth_type(chan);
if (l2cap_pi(sk)->dcid == L2CAP_CID_LE_DATA)
if (chan->dcid == L2CAP_CID_LE_DATA)
hcon = hci_connect(hdev, LE_LINK, dst,
chan->sec_level, auth_type);
else
......@@ -1231,8 +1233,9 @@ static inline int l2cap_skbuff_fromiovec(struct sock *sk, struct msghdr *msg, in
return sent;
}
struct sk_buff *l2cap_create_connless_pdu(struct sock *sk, struct msghdr *msg, size_t len)
struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
{
struct sock *sk = chan->sk;
struct l2cap_conn *conn = l2cap_pi(sk)->conn;
struct sk_buff *skb;
int err, count, hlen = L2CAP_HDR_SIZE + 2;
......@@ -1248,9 +1251,9 @@ struct sk_buff *l2cap_create_connless_pdu(struct sock *sk, struct msghdr *msg, s
/* Create L2CAP header */
lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
lh->cid = cpu_to_le16(l2cap_pi(sk)->dcid);
lh->cid = cpu_to_le16(chan->dcid);
lh->len = cpu_to_le16(len + (hlen - L2CAP_HDR_SIZE));
put_unaligned_le16(l2cap_pi(sk)->psm, skb_put(skb, 2));
put_unaligned_le16(chan->psm, skb_put(skb, 2));
err = l2cap_skbuff_fromiovec(sk, msg, len, count, skb);
if (unlikely(err < 0)) {
......@@ -1260,8 +1263,9 @@ struct sk_buff *l2cap_create_connless_pdu(struct sock *sk, struct msghdr *msg, s
return skb;
}
struct sk_buff *l2cap_create_basic_pdu(struct sock *sk, struct msghdr *msg, size_t len)
struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
{
struct sock *sk = chan->sk;
struct l2cap_conn *conn = l2cap_pi(sk)->conn;
struct sk_buff *skb;
int err, count, hlen = L2CAP_HDR_SIZE;
......@@ -1277,7 +1281,7 @@ struct sk_buff *l2cap_create_basic_pdu(struct sock *sk, struct msghdr *msg, size
/* Create L2CAP header */
lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
lh->cid = cpu_to_le16(l2cap_pi(sk)->dcid);
lh->cid = cpu_to_le16(chan->dcid);
lh->len = cpu_to_le16(len + (hlen - L2CAP_HDR_SIZE));
err = l2cap_skbuff_fromiovec(sk, msg, len, count, skb);
......@@ -1315,7 +1319,7 @@ struct sk_buff *l2cap_create_iframe_pdu(struct l2cap_chan *chan, struct msghdr *
/* Create L2CAP header */
lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
lh->cid = cpu_to_le16(l2cap_pi(sk)->dcid);
lh->cid = cpu_to_le16(chan->dcid);
lh->len = cpu_to_le16(len + (hlen - L2CAP_HDR_SIZE));
put_unaligned_le16(control, skb_put(skb, 2));
if (sdulen)
......@@ -1697,7 +1701,7 @@ static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data)
break;
}
req->dcid = cpu_to_le16(pi->dcid);
req->dcid = cpu_to_le16(chan->dcid);
req->flags = cpu_to_le16(0);
return ptr - data;
......@@ -1850,7 +1854,7 @@ static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data)
if (result == L2CAP_CONF_SUCCESS)
chan->conf_state |= L2CAP_CONF_OUTPUT_DONE;
}
rsp->scid = cpu_to_le16(pi->dcid);
rsp->scid = cpu_to_le16(chan->dcid);
rsp->result = cpu_to_le16(result);
rsp->flags = cpu_to_le16(0x0000);
......@@ -1859,15 +1863,13 @@ static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data)
static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len, void *data, u16 *result)
{
struct sock *sk = chan->sk;
struct l2cap_pinfo *pi = l2cap_pi(sk);
struct l2cap_conf_req *req = data;
void *ptr = req->data;
int type, olen;
unsigned long val;
struct l2cap_conf_rfc rfc;
BT_DBG("sk %p, rsp %p, len %d, req %p", sk, rsp, len, data);
BT_DBG("chan %p, rsp %p, len %d, req %p", chan, rsp, len, data);
while (len >= L2CAP_CONF_OPT_SIZE) {
len -= l2cap_get_conf_opt(&rsp, &type, &olen, &val);
......@@ -1921,20 +1923,20 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len, voi
}
}
req->dcid = cpu_to_le16(pi->dcid);
req->dcid = cpu_to_le16(chan->dcid);
req->flags = cpu_to_le16(0x0000);
return ptr - data;
}
static int l2cap_build_conf_rsp(struct sock *sk, void *data, u16 result, u16 flags)
static int l2cap_build_conf_rsp(struct l2cap_chan *chan, void *data, u16 result, u16 flags)
{
struct l2cap_conf_rsp *rsp = data;
void *ptr = rsp->data;
BT_DBG("sk %p", sk);
BT_DBG("chan %p", chan);
rsp->scid = cpu_to_le16(l2cap_pi(sk)->dcid);
rsp->scid = cpu_to_le16(chan->dcid);
rsp->result = cpu_to_le16(result);
rsp->flags = cpu_to_le16(flags);
......@@ -1950,8 +1952,8 @@ void __l2cap_connect_rsp_defer(struct sock *sk)
sk->sk_state = BT_CONFIG;
rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
rsp.scid = cpu_to_le16(chan->dcid);
rsp.dcid = cpu_to_le16(chan->scid);
rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS);
rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
l2cap_send_cmd(conn, chan->ident,
......@@ -2085,14 +2087,14 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
l2cap_sock_init(sk, parent);
bacpy(&bt_sk(sk)->src, conn->src);
bacpy(&bt_sk(sk)->dst, conn->dst);
l2cap_pi(sk)->psm = psm;
l2cap_pi(sk)->dcid = scid;
chan->psm = psm;
chan->dcid = scid;
bt_accept_enqueue(parent, sk);
__l2cap_chan_add(conn, chan);
dcid = l2cap_pi(sk)->scid;
dcid = chan->scid;
l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
......@@ -2190,7 +2192,7 @@ static inline int l2cap_connect_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hd
case L2CAP_CR_SUCCESS:
sk->sk_state = BT_CONFIG;
chan->ident = 0;
l2cap_pi(sk)->dcid = dcid;
chan->dcid = dcid;
chan->conf_state &= ~L2CAP_CONF_CONNECT_PEND;
if (chan->conf_state & L2CAP_CONF_REQ_SENT)
......@@ -2270,7 +2272,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr
len = cmd_len - sizeof(*req);
if (chan->conf_len + len > sizeof(chan->conf_req)) {
l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP,
l2cap_build_conf_rsp(sk, rsp,
l2cap_build_conf_rsp(chan, rsp,
L2CAP_CONF_REJECT, flags), rsp);
goto unlock;
}
......@@ -2282,7 +2284,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr
if (flags & 0x0001) {
/* Incomplete config. Send empty response. */
l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP,
l2cap_build_conf_rsp(sk, rsp,
l2cap_build_conf_rsp(chan, rsp,
L2CAP_CONF_SUCCESS, 0x0001), rsp);
goto unlock;
}
......@@ -2432,8 +2434,8 @@ static inline int l2cap_disconnect_req(struct l2cap_conn *conn, struct l2cap_cmd
sk = chan->sk;
rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
rsp.dcid = cpu_to_le16(chan->scid);
rsp.scid = cpu_to_le16(chan->dcid);
l2cap_send_cmd(conn, cmd->ident, L2CAP_DISCONN_RSP, sizeof(rsp), &rsp);
sk->sk_shutdown = SHUTDOWN_MASK;
......@@ -3920,8 +3922,8 @@ static int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
if (sk->sk_state == BT_CONNECT) {
if (!status) {
struct l2cap_conn_req req;
req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
req.psm = l2cap_pi(sk)->psm;
req.scid = cpu_to_le16(chan->scid);
req.psm = chan->psm;
chan->ident = l2cap_get_ident(conn);
chan->conf_state |= L2CAP_CONF_CONNECT_PEND;
......@@ -3945,8 +3947,8 @@ static int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
result = L2CAP_CR_SEC_BLOCK;
}
rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
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,
......@@ -4086,8 +4088,8 @@ static int l2cap_debugfs_show(struct seq_file *f, void *p)
seq_printf(f, "%s %s %d %d 0x%4.4x 0x%4.4x %d %d %d %d\n",
batostr(&bt_sk(sk)->src),
batostr(&bt_sk(sk)->dst),
sk->sk_state, __le16_to_cpu(pi->psm),
pi->scid, pi->dcid,
sk->sk_state, __le16_to_cpu(chan->psm),
chan->scid, chan->dcid,
chan->imtu, chan->omtu, chan->sec_level,
chan->mode);
}
......
net/bluetooth/l2cap_sock.c
View file @ fe4128e0
......@@ -141,7 +141,7 @@ static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
} else {
/* Save source address */
bacpy(&bt_sk(sk)->src, &la.l2_bdaddr);
l2cap_pi(sk)->psm = la.l2_psm;
chan->psm = la.l2_psm;
chan->sport = la.l2_psm;
sk->sk_state = BT_BOUND;
......@@ -151,7 +151,7 @@ static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
}
if (la.l2_cid)
l2cap_pi(sk)->scid = la.l2_cid;
chan->scid = la.l2_cid;
write_unlock_bh(&l2cap_sk_list.lock);
......@@ -232,8 +232,8 @@ static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int al
/* Set destination address and psm */
bacpy(&bt_sk(sk)->dst, &la.l2_bdaddr);
l2cap_pi(sk)->psm = la.l2_psm;
l2cap_pi(sk)->dcid = la.l2_cid;
chan->psm = la.l2_psm;
chan->dcid = la.l2_cid;
err = l2cap_chan_connect(l2cap_pi(sk)->chan);
if (err)
......@@ -276,7 +276,7 @@ static int l2cap_sock_listen(struct socket *sock, int backlog)
goto done;
}
if (!l2cap_pi(sk)->psm && !l2cap_pi(sk)->scid) {
if (!chan->psm && !chan->scid) {
bdaddr_t *src = &bt_sk(sk)->src;
u16 psm;
......@@ -286,7 +286,7 @@ static int l2cap_sock_listen(struct socket *sock, int backlog)
for (psm = 0x1001; psm < 0x1100; psm += 2)
if (!__l2cap_get_sock_by_addr(cpu_to_le16(psm), src)) {
l2cap_pi(sk)->psm = cpu_to_le16(psm);
chan->psm = cpu_to_le16(psm);
chan->sport = cpu_to_le16(psm);
err = 0;
break;
......@@ -375,13 +375,13 @@ static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, int *l
*len = sizeof(struct sockaddr_l2);
if (peer) {
la->l2_psm = l2cap_pi(sk)->psm;
la->l2_psm = chan->psm;
bacpy(&la->l2_bdaddr, &bt_sk(sk)->dst);
la->l2_cid = cpu_to_le16(l2cap_pi(sk)->dcid);
la->l2_cid = cpu_to_le16(chan->dcid);
} else {
la->l2_psm = chan->sport;
bacpy(&la->l2_bdaddr, &bt_sk(sk)->src);
la->l2_cid = cpu_to_le16(l2cap_pi(sk)->scid);
la->l2_cid = cpu_to_le16(chan->scid);
}
return 0;
......@@ -737,7 +737,7 @@ static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct ms
/* Connectionless channel */
if (sk->sk_type == SOCK_DGRAM) {
skb = l2cap_create_connless_pdu(sk, msg, len);
skb = l2cap_create_connless_pdu(chan, msg, len);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
} else {
......@@ -756,7 +756,7 @@ static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct ms
}
/* Create a basic PDU */
skb = l2cap_create_basic_pdu(sk, msg, len);
skb = l2cap_create_basic_pdu(chan, msg, len);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
goto done;
......@@ -911,8 +911,8 @@ void __l2cap_sock_close(struct sock *sk, int reason)
else
result = L2CAP_CR_BAD_PSM;
rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
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,
......
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