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;
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;
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 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;
if (sk->sk_type == SOCK_SEQPACKET || sk->sk_type == SOCK_STREAM) {
if (conn->hcon->type == LE_LINK) {
/* LE connection */
- l2cap_pi(sk)->omtu = L2CAP_LE_DEFAULT_MTU;
- l2cap_pi(sk)->scid = L2CAP_CID_LE_DATA;
- l2cap_pi(sk)->dcid = L2CAP_CID_LE_DATA;
+ chan->omtu = L2CAP_LE_DEFAULT_MTU;
+ 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);
- l2cap_pi(sk)->omtu = L2CAP_DEFAULT_MTU;
+ 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;
- l2cap_pi(sk)->omtu = L2CAP_DEFAULT_MTU;
+ 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;
- l2cap_pi(sk)->omtu = L2CAP_DEFAULT_MTU;
+ chan->scid = L2CAP_CID_SIGNALING;
+ chan->dcid = L2CAP_CID_SIGNALING;
+ chan->omtu = L2CAP_DEFAULT_MTU;
}
sock_hold(sk);
l2cap_sock_clear_timer(sk);
- BT_DBG("sk %p, conn %p, err %d", sk, conn, err);
+ BT_DBG("chan %p, conn %p, err %d", chan, conn, err);
if (conn) {
/* Delete from channel list */
} else
sk->sk_state_change(sk);
- if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_OUTPUT_DONE &&
- l2cap_pi(sk)->conf_state & L2CAP_CONF_INPUT_DONE))
+ if (!(chan->conf_state & L2CAP_CONF_OUTPUT_DONE &&
+ chan->conf_state & L2CAP_CONF_INPUT_DONE))
goto free;
- skb_queue_purge(TX_QUEUE(sk));
+ skb_queue_purge(&chan->tx_q);
- if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
+ if (chan->mode == L2CAP_MODE_ERTM) {
struct srej_list *l, *tmp;
del_timer(&chan->retrans_timer);
kfree(chan);
}
-static inline u8 l2cap_get_auth_type(struct sock *sk)
+static inline u8 l2cap_get_auth_type(struct l2cap_chan *chan)
{
+ struct sock *sk = chan->sk;
+
if (sk->sk_type == SOCK_RAW) {
- switch (l2cap_pi(sk)->sec_level) {
+ switch (chan->sec_level) {
case BT_SECURITY_HIGH:
return HCI_AT_DEDICATED_BONDING_MITM;
case BT_SECURITY_MEDIUM:
default:
return HCI_AT_NO_BONDING;
}
- } else if (l2cap_pi(sk)->psm == cpu_to_le16(0x0001)) {
- if (l2cap_pi(sk)->sec_level == BT_SECURITY_LOW)
- l2cap_pi(sk)->sec_level = BT_SECURITY_SDP;
+ } else if (chan->psm == cpu_to_le16(0x0001)) {
+ if (chan->sec_level == BT_SECURITY_LOW)
+ chan->sec_level = BT_SECURITY_SDP;
- if (l2cap_pi(sk)->sec_level == BT_SECURITY_HIGH)
+ if (chan->sec_level == BT_SECURITY_HIGH)
return HCI_AT_NO_BONDING_MITM;
else
return HCI_AT_NO_BONDING;
} else {
- switch (l2cap_pi(sk)->sec_level) {
+ switch (chan->sec_level) {
case BT_SECURITY_HIGH:
return HCI_AT_GENERAL_BONDING_MITM;
case BT_SECURITY_MEDIUM:
}
/* Service level security */
-static inline int l2cap_check_security(struct sock *sk)
+static inline int l2cap_check_security(struct l2cap_chan *chan)
{
- struct l2cap_conn *conn = l2cap_pi(sk)->conn;
+ struct l2cap_conn *conn = l2cap_pi(chan->sk)->conn;
__u8 auth_type;
- auth_type = l2cap_get_auth_type(sk);
+ auth_type = l2cap_get_auth_type(chan);
- return hci_conn_security(conn->hcon, l2cap_pi(sk)->sec_level,
- auth_type);
+ return hci_conn_security(conn->hcon, chan->sec_level, auth_type);
}
u8 l2cap_get_ident(struct l2cap_conn *conn)
if (sk->sk_state != BT_CONNECTED)
return;
- if (pi->fcs == L2CAP_FCS_CRC16)
+ if (chan->fcs == L2CAP_FCS_CRC16)
hlen += 2;
- BT_DBG("pi %p, control 0x%2.2x", pi, control);
+ BT_DBG("chan %p, control 0x%2.2x", chan, control);
count = min_t(unsigned int, conn->mtu, hlen);
control |= L2CAP_CTRL_FRAME_TYPE;
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 (pi->fcs == L2CAP_FCS_CRC16) {
+ if (chan->fcs == L2CAP_FCS_CRC16) {
u16 fcs = crc16(0, (u8 *)lh, count - 2);
put_unaligned_le16(fcs, skb_put(skb, 2));
}
l2cap_send_sframe(chan, control);
}
-static inline int __l2cap_no_conn_pending(struct sock *sk)
+static inline int __l2cap_no_conn_pending(struct l2cap_chan *chan)
{
- return !(l2cap_pi(sk)->conf_state & L2CAP_CONF_CONNECT_PEND);
+ return !(chan->conf_state & L2CAP_CONF_CONNECT_PEND);
}
static void l2cap_do_start(struct l2cap_chan *chan)
if (!(conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_DONE))
return;
- if (l2cap_check_security(sk) && __l2cap_no_conn_pending(sk)) {
+ 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);
- l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND;
+ chan->conf_state |= L2CAP_CONF_CONNECT_PEND;
l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_REQ,
sizeof(req), &req);
sk = chan->sk;
- skb_queue_purge(TX_QUEUE(sk));
-
- if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
+ if (chan->mode == L2CAP_MODE_ERTM) {
del_timer(&chan->retrans_timer);
del_timer(&chan->monitor_timer);
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);
if (sk->sk_state == BT_CONNECT) {
struct l2cap_conn_req req;
- if (!l2cap_check_security(sk) ||
- !__l2cap_no_conn_pending(sk)) {
+ if (!l2cap_check_security(chan) ||
+ !__l2cap_no_conn_pending(chan)) {
bh_unlock_sock(sk);
continue;
}
- if (!l2cap_mode_supported(l2cap_pi(sk)->mode,
+ if (!l2cap_mode_supported(chan->mode,
conn->feat_mask)
- && l2cap_pi(sk)->conf_state &
+ && chan->conf_state &
L2CAP_CONF_STATE2_DEVICE) {
/* __l2cap_sock_close() calls list_del(chan)
* so release the lock */
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);
- l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND;
+ chan->conf_state |= L2CAP_CONF_CONNECT_PEND;
l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_REQ,
sizeof(req), &req);
} 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(sk)) {
+ if (l2cap_check_security(chan)) {
if (bt_sk(sk)->defer_setup) {
struct sock *parent = bt_sk(sk)->parent;
rsp.result = cpu_to_le16(L2CAP_CR_PEND);
l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_RSP,
sizeof(rsp), &rsp);
- if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT ||
+ if (chan->conf_state & L2CAP_CONF_REQ_SENT ||
rsp.result != L2CAP_CR_SUCCESS) {
bh_unlock_sock(sk);
continue;
}
- l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
+ chan->conf_state |= L2CAP_CONF_REQ_SENT;
l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
l2cap_build_conf_req(chan, buf), buf);
chan->num_conf_req++;
*/
static struct sock *l2cap_get_sock_by_scid(int state, __le16 cid, bdaddr_t *src)
{
- struct sock *s, *sk = NULL, *sk1 = NULL;
+ struct sock *sk = NULL, *sk1 = NULL;
struct hlist_node *node;
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;
sk1 = sk;
}
}
- s = node ? sk : sk1;
- if (s)
- bh_lock_sock(s);
+
read_unlock(&l2cap_sk_list.lock);
- return s;
+ return node ? sk : sk1;
}
static void l2cap_le_conn_ready(struct l2cap_conn *conn)
{
- struct sock *parent, *uninitialized_var(sk);
+ struct sock *parent, *sk;
struct l2cap_chan *chan;
BT_DBG("");
if (!parent)
return;
+ bh_lock_sock(parent);
+
/* Check for backlog size */
if (sk_acceptq_is_full(parent)) {
BT_DBG("backlog full %d", parent->sk_ack_backlog);
goto clean;
}
+ l2cap_pi(sk)->chan = chan;
+
write_lock_bh(&conn->chan_lock);
hci_conn_hold(conn->hcon);
__l2cap_chan_add(conn, chan);
- l2cap_pi(sk)->chan = chan;
-
l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
sk->sk_state = BT_CONNECTED;
list_for_each_entry(chan, &conn->chan_l, list) {
struct sock *sk = chan->sk;
- if (l2cap_pi(sk)->force_reliable)
+ if (chan->force_reliable)
sk->sk_err = err;
}
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;
return node ? sk : sk1;
}
-int l2cap_do_connect(struct sock *sk)
+int l2cap_chan_connect(struct l2cap_chan *chan)
{
+ struct sock *sk = chan->sk;
bdaddr_t *src = &bt_sk(sk)->src;
bdaddr_t *dst = &bt_sk(sk)->dst;
struct l2cap_conn *conn;
- struct l2cap_chan *chan;
struct hci_conn *hcon;
struct hci_dev *hdev;
__u8 auth_type;
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)
hci_dev_lock_bh(hdev);
- auth_type = l2cap_get_auth_type(sk);
+ 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,
- l2cap_pi(sk)->sec_level, auth_type);
+ chan->sec_level, auth_type);
else
hcon = hci_connect(hdev, ACL_LINK, dst,
- l2cap_pi(sk)->sec_level, auth_type);
+ chan->sec_level, auth_type);
if (IS_ERR(hcon)) {
err = PTR_ERR(hcon);
goto done;
}
- chan = l2cap_chan_alloc(sk);
- if (!chan) {
- hci_conn_put(hcon);
- err = -ENOMEM;
- goto done;
- }
-
/* Update source addr of the socket */
bacpy(src, conn->src);
l2cap_chan_add(conn, chan);
- l2cap_pi(sk)->chan = chan;
-
sk->sk_state = BT_CONNECT;
l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
if (sk->sk_type != SOCK_SEQPACKET &&
sk->sk_type != SOCK_STREAM) {
l2cap_sock_clear_timer(sk);
- if (l2cap_check_security(sk))
+ if (l2cap_check_security(chan))
sk->sk_state = BT_CONNECTED;
} else
l2cap_do_start(chan);
struct l2cap_chan *chan = (void *) arg;
struct sock *sk = chan->sk;
- BT_DBG("sk %p", sk);
+ BT_DBG("chan %p", chan);
bh_lock_sock(sk);
chan->retry_count = 1;
static void l2cap_drop_acked_frames(struct l2cap_chan *chan)
{
- struct sock *sk = chan->sk;
struct sk_buff *skb;
- while ((skb = skb_peek(TX_QUEUE(sk))) &&
+ while ((skb = skb_peek(&chan->tx_q)) &&
chan->unacked_frames) {
if (bt_cb(skb)->tx_seq == chan->expected_ack_seq)
break;
- skb = skb_dequeue(TX_QUEUE(sk));
+ skb = skb_dequeue(&chan->tx_q);
kfree_skb(skb);
chan->unacked_frames--;
del_timer(&chan->retrans_timer);
}
-void l2cap_do_send(struct sock *sk, struct sk_buff *skb)
+void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb)
{
- struct l2cap_pinfo *pi = l2cap_pi(sk);
- struct hci_conn *hcon = pi->conn->hcon;
+ struct sock *sk = chan->sk;
+ struct hci_conn *hcon = l2cap_pi(sk)->conn->hcon;
u16 flags;
- BT_DBG("sk %p, skb %p len %d", sk, skb, skb->len);
+ BT_DBG("chan %p, skb %p len %d", chan, skb, skb->len);
- if (!pi->flushable && lmp_no_flush_capable(hcon->hdev))
+ if (!chan->flushable && lmp_no_flush_capable(hcon->hdev))
flags = ACL_START_NO_FLUSH;
else
flags = ACL_START;
void l2cap_streaming_send(struct l2cap_chan *chan)
{
- struct sock *sk = chan->sk;
struct sk_buff *skb;
- struct l2cap_pinfo *pi = l2cap_pi(sk);
u16 control, fcs;
- while ((skb = skb_dequeue(TX_QUEUE(sk)))) {
+ while ((skb = skb_dequeue(&chan->tx_q))) {
control = get_unaligned_le16(skb->data + L2CAP_HDR_SIZE);
control |= chan->next_tx_seq << L2CAP_CTRL_TXSEQ_SHIFT;
put_unaligned_le16(control, skb->data + L2CAP_HDR_SIZE);
- if (pi->fcs == L2CAP_FCS_CRC16) {
+ if (chan->fcs == L2CAP_FCS_CRC16) {
fcs = crc16(0, (u8 *)skb->data, skb->len - 2);
put_unaligned_le16(fcs, skb->data + skb->len - 2);
}
- l2cap_do_send(sk, skb);
+ l2cap_do_send(chan, skb);
chan->next_tx_seq = (chan->next_tx_seq + 1) % 64;
}
struct sk_buff *skb, *tx_skb;
u16 control, fcs;
- skb = skb_peek(TX_QUEUE(sk));
+ skb = skb_peek(&chan->tx_q);
if (!skb)
return;
if (bt_cb(skb)->tx_seq == tx_seq)
break;
- if (skb_queue_is_last(TX_QUEUE(sk), skb))
+ if (skb_queue_is_last(&chan->tx_q, skb))
return;
- } while ((skb = skb_queue_next(TX_QUEUE(sk), skb)));
+ } while ((skb = skb_queue_next(&chan->tx_q, skb)));
if (chan->remote_max_tx &&
bt_cb(skb)->retries == chan->remote_max_tx) {
tx_skb = skb_clone(skb, GFP_ATOMIC);
bt_cb(skb)->retries++;
control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE);
+ control &= L2CAP_CTRL_SAR;
if (chan->conn_state & L2CAP_CONN_SEND_FBIT) {
control |= L2CAP_CTRL_FINAL;
put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE);
- if (pi->fcs == L2CAP_FCS_CRC16) {
+ if (chan->fcs == L2CAP_FCS_CRC16) {
fcs = crc16(0, (u8 *)tx_skb->data, tx_skb->len - 2);
put_unaligned_le16(fcs, tx_skb->data + tx_skb->len - 2);
}
- l2cap_do_send(sk, tx_skb);
+ l2cap_do_send(chan, tx_skb);
}
int l2cap_ertm_send(struct l2cap_chan *chan)
if (sk->sk_state != BT_CONNECTED)
return -ENOTCONN;
- while ((skb = sk->sk_send_head) && (!l2cap_tx_window_full(chan))) {
+ while ((skb = chan->tx_send_head) && (!l2cap_tx_window_full(chan))) {
if (chan->remote_max_tx &&
bt_cb(skb)->retries == chan->remote_max_tx) {
put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE);
- if (pi->fcs == L2CAP_FCS_CRC16) {
+ if (chan->fcs == L2CAP_FCS_CRC16) {
fcs = crc16(0, (u8 *)skb->data, tx_skb->len - 2);
put_unaligned_le16(fcs, skb->data + tx_skb->len - 2);
}
- l2cap_do_send(sk, tx_skb);
+ l2cap_do_send(chan, tx_skb);
__mod_retrans_timer();
chan->frames_sent++;
- if (skb_queue_is_last(TX_QUEUE(sk), skb))
- sk->sk_send_head = NULL;
+ if (skb_queue_is_last(&chan->tx_q, skb))
+ chan->tx_send_head = NULL;
else
- sk->sk_send_head = skb_queue_next(TX_QUEUE(sk), skb);
+ chan->tx_send_head = skb_queue_next(&chan->tx_q, skb);
nsent++;
}
static int l2cap_retransmit_frames(struct l2cap_chan *chan)
{
- struct sock *sk = chan->sk;
int ret;
- if (!skb_queue_empty(TX_QUEUE(sk)))
- sk->sk_send_head = TX_QUEUE(sk)->next;
+ if (!skb_queue_empty(&chan->tx_q))
+ chan->tx_send_head = chan->tx_q.next;
chan->next_tx_seq = chan->expected_ack_seq;
ret = l2cap_ertm_send(chan);
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;
/* 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)) {
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;
/* 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);
return skb;
}
-struct sk_buff *l2cap_create_iframe_pdu(struct sock *sk, struct msghdr *msg, size_t len, u16 control, u16 sdulen)
+struct sk_buff *l2cap_create_iframe_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len, u16 control, u16 sdulen)
{
+ 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;
if (sdulen)
hlen += 2;
- if (l2cap_pi(sk)->fcs == L2CAP_FCS_CRC16)
+ if (chan->fcs == L2CAP_FCS_CRC16)
hlen += 2;
count = min_t(unsigned int, (conn->mtu - hlen), len);
/* 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)
return ERR_PTR(err);
}
- if (l2cap_pi(sk)->fcs == L2CAP_FCS_CRC16)
+ if (chan->fcs == L2CAP_FCS_CRC16)
put_unaligned_le16(0, skb_put(skb, 2));
bt_cb(skb)->retries = 0;
int l2cap_sar_segment_sdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
{
- struct sock *sk = chan->sk;
struct sk_buff *skb;
struct sk_buff_head sar_queue;
u16 control;
skb_queue_head_init(&sar_queue);
control = L2CAP_SDU_START;
- skb = l2cap_create_iframe_pdu(sk, msg, chan->remote_mps, control, len);
+ skb = l2cap_create_iframe_pdu(chan, msg, chan->remote_mps, control, len);
if (IS_ERR(skb))
return PTR_ERR(skb);
buflen = len;
}
- skb = l2cap_create_iframe_pdu(sk, msg, buflen, control, 0);
+ skb = l2cap_create_iframe_pdu(chan, msg, buflen, control, 0);
if (IS_ERR(skb)) {
skb_queue_purge(&sar_queue);
return PTR_ERR(skb);
len -= buflen;
size += buflen;
}
- skb_queue_splice_tail(&sar_queue, TX_QUEUE(sk));
- if (sk->sk_send_head == NULL)
- sk->sk_send_head = sar_queue.next;
+ skb_queue_splice_tail(&sar_queue, &chan->tx_q);
+ if (chan->tx_send_head == NULL)
+ chan->tx_send_head = sar_queue.next;
return size;
}
static void l2cap_chan_ready(struct sock *sk)
{
struct sock *parent = bt_sk(sk)->parent;
+ struct l2cap_chan *chan = l2cap_pi(sk)->chan;
BT_DBG("sk %p, parent %p", sk, parent);
- l2cap_pi(sk)->conf_state = 0;
+ chan->conf_state = 0;
l2cap_sock_clear_timer(sk);
if (!parent) {
static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data)
{
- struct sock *sk = chan->sk;
- struct l2cap_pinfo *pi = l2cap_pi(sk);
+ struct l2cap_pinfo *pi = l2cap_pi(chan->sk);
struct l2cap_conf_req *req = data;
- struct l2cap_conf_rfc rfc = { .mode = pi->mode };
+ struct l2cap_conf_rfc rfc = { .mode = chan->mode };
void *ptr = req->data;
- BT_DBG("sk %p", sk);
+ BT_DBG("chan %p", chan);
if (chan->num_conf_req || chan->num_conf_rsp)
goto done;
- switch (pi->mode) {
+ switch (chan->mode) {
case L2CAP_MODE_STREAMING:
case L2CAP_MODE_ERTM:
- if (pi->conf_state & L2CAP_CONF_STATE2_DEVICE)
+ if (chan->conf_state & L2CAP_CONF_STATE2_DEVICE)
break;
/* fall through */
default:
- pi->mode = l2cap_select_mode(rfc.mode, pi->conn->feat_mask);
+ chan->mode = l2cap_select_mode(rfc.mode, pi->conn->feat_mask);
break;
}
done:
- if (pi->imtu != L2CAP_DEFAULT_MTU)
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->imtu);
+ if (chan->imtu != L2CAP_DEFAULT_MTU)
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu);
- switch (pi->mode) {
+ switch (chan->mode) {
case L2CAP_MODE_BASIC:
if (!(pi->conn->feat_mask & L2CAP_FEAT_ERTM) &&
!(pi->conn->feat_mask & L2CAP_FEAT_STREAMING))
case L2CAP_MODE_ERTM:
rfc.mode = L2CAP_MODE_ERTM;
- rfc.txwin_size = pi->tx_win;
- rfc.max_transmit = pi->max_tx;
+ rfc.txwin_size = chan->tx_win;
+ rfc.max_transmit = chan->max_tx;
rfc.retrans_timeout = 0;
rfc.monitor_timeout = 0;
rfc.max_pdu_size = cpu_to_le16(L2CAP_DEFAULT_MAX_PDU_SIZE);
if (!(pi->conn->feat_mask & L2CAP_FEAT_FCS))
break;
- if (pi->fcs == L2CAP_FCS_NONE ||
- pi->conf_state & L2CAP_CONF_NO_FCS_RECV) {
- pi->fcs = L2CAP_FCS_NONE;
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_FCS, 1, pi->fcs);
+ if (chan->fcs == L2CAP_FCS_NONE ||
+ chan->conf_state & L2CAP_CONF_NO_FCS_RECV) {
+ chan->fcs = L2CAP_FCS_NONE;
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_FCS, 1, chan->fcs);
}
break;
if (!(pi->conn->feat_mask & L2CAP_FEAT_FCS))
break;
- if (pi->fcs == L2CAP_FCS_NONE ||
- pi->conf_state & L2CAP_CONF_NO_FCS_RECV) {
- pi->fcs = L2CAP_FCS_NONE;
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_FCS, 1, pi->fcs);
+ if (chan->fcs == L2CAP_FCS_NONE ||
+ chan->conf_state & L2CAP_CONF_NO_FCS_RECV) {
+ chan->fcs = L2CAP_FCS_NONE;
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_FCS, 1, chan->fcs);
}
break;
}
- req->dcid = cpu_to_le16(pi->dcid);
+ req->dcid = cpu_to_le16(chan->dcid);
req->flags = cpu_to_le16(0);
return ptr - data;
break;
case L2CAP_CONF_FLUSH_TO:
- pi->flush_to = val;
+ chan->flush_to = val;
break;
case L2CAP_CONF_QOS:
case L2CAP_CONF_FCS:
if (val == L2CAP_FCS_NONE)
- pi->conf_state |= L2CAP_CONF_NO_FCS_RECV;
+ chan->conf_state |= L2CAP_CONF_NO_FCS_RECV;
break;
if (chan->num_conf_rsp || chan->num_conf_req > 1)
goto done;
- switch (pi->mode) {
+ switch (chan->mode) {
case L2CAP_MODE_STREAMING:
case L2CAP_MODE_ERTM:
- if (!(pi->conf_state & L2CAP_CONF_STATE2_DEVICE)) {
- pi->mode = l2cap_select_mode(rfc.mode,
+ if (!(chan->conf_state & L2CAP_CONF_STATE2_DEVICE)) {
+ chan->mode = l2cap_select_mode(rfc.mode,
pi->conn->feat_mask);
break;
}
- if (pi->mode != rfc.mode)
+ if (chan->mode != rfc.mode)
return -ECONNREFUSED;
break;
}
done:
- if (pi->mode != rfc.mode) {
+ if (chan->mode != rfc.mode) {
result = L2CAP_CONF_UNACCEPT;
- rfc.mode = pi->mode;
+ rfc.mode = chan->mode;
if (chan->num_conf_rsp == 1)
return -ECONNREFUSED;
if (mtu < L2CAP_DEFAULT_MIN_MTU)
result = L2CAP_CONF_UNACCEPT;
else {
- pi->omtu = mtu;
- pi->conf_state |= L2CAP_CONF_MTU_DONE;
+ chan->omtu = mtu;
+ chan->conf_state |= L2CAP_CONF_MTU_DONE;
}
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->omtu);
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->omtu);
switch (rfc.mode) {
case L2CAP_MODE_BASIC:
- pi->fcs = L2CAP_FCS_NONE;
- pi->conf_state |= L2CAP_CONF_MODE_DONE;
+ chan->fcs = L2CAP_FCS_NONE;
+ chan->conf_state |= L2CAP_CONF_MODE_DONE;
break;
case L2CAP_MODE_ERTM:
rfc.monitor_timeout =
le16_to_cpu(L2CAP_DEFAULT_MONITOR_TO);
- pi->conf_state |= L2CAP_CONF_MODE_DONE;
+ chan->conf_state |= L2CAP_CONF_MODE_DONE;
l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
sizeof(rfc), (unsigned long) &rfc);
chan->remote_mps = le16_to_cpu(rfc.max_pdu_size);
- pi->conf_state |= L2CAP_CONF_MODE_DONE;
+ chan->conf_state |= L2CAP_CONF_MODE_DONE;
l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
sizeof(rfc), (unsigned long) &rfc);
result = L2CAP_CONF_UNACCEPT;
memset(&rfc, 0, sizeof(rfc));
- rfc.mode = pi->mode;
+ rfc.mode = chan->mode;
}
if (result == L2CAP_CONF_SUCCESS)
- pi->conf_state |= L2CAP_CONF_OUTPUT_DONE;
+ 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);
return ptr - data;
}
-static int l2cap_parse_conf_rsp(struct sock *sk, void *rsp, int len, void *data, u16 *result)
+static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len, void *data, u16 *result)
{
- 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);
case L2CAP_CONF_MTU:
if (val < L2CAP_DEFAULT_MIN_MTU) {
*result = L2CAP_CONF_UNACCEPT;
- pi->imtu = L2CAP_DEFAULT_MIN_MTU;
+ chan->imtu = L2CAP_DEFAULT_MIN_MTU;
} else
- pi->imtu = val;
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->imtu);
+ chan->imtu = val;
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->imtu);
break;
case L2CAP_CONF_FLUSH_TO:
- pi->flush_to = val;
+ chan->flush_to = val;
l2cap_add_conf_opt(&ptr, L2CAP_CONF_FLUSH_TO,
- 2, pi->flush_to);
+ 2, chan->flush_to);
break;
case L2CAP_CONF_RFC:
if (olen == sizeof(rfc))
memcpy(&rfc, (void *)val, olen);
- if ((pi->conf_state & L2CAP_CONF_STATE2_DEVICE) &&
- rfc.mode != pi->mode)
+ if ((chan->conf_state & L2CAP_CONF_STATE2_DEVICE) &&
+ rfc.mode != chan->mode)
return -ECONNREFUSED;
- pi->fcs = 0;
+ chan->fcs = 0;
l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
sizeof(rfc), (unsigned long) &rfc);
}
}
- if (pi->mode == L2CAP_MODE_BASIC && pi->mode != rfc.mode)
+ if (chan->mode == L2CAP_MODE_BASIC && chan->mode != rfc.mode)
return -ECONNREFUSED;
- pi->mode = rfc.mode;
+ chan->mode = rfc.mode;
if (*result == L2CAP_CONF_SUCCESS) {
switch (rfc.mode) {
case L2CAP_MODE_ERTM:
- pi->retrans_timeout = le16_to_cpu(rfc.retrans_timeout);
- pi->monitor_timeout = le16_to_cpu(rfc.monitor_timeout);
- pi->mps = le16_to_cpu(rfc.max_pdu_size);
+ chan->retrans_timeout = le16_to_cpu(rfc.retrans_timeout);
+ chan->monitor_timeout = le16_to_cpu(rfc.monitor_timeout);
+ chan->mps = le16_to_cpu(rfc.max_pdu_size);
break;
case L2CAP_MODE_STREAMING:
- pi->mps = le16_to_cpu(rfc.max_pdu_size);
+ chan->mps = le16_to_cpu(rfc.max_pdu_size);
}
}
- 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);
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,
L2CAP_CONN_RSP, sizeof(rsp), &rsp);
- if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT)
+ if (chan->conf_state & L2CAP_CONF_REQ_SENT)
return;
- l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
+ chan->conf_state |= L2CAP_CONF_REQ_SENT;
l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
l2cap_build_conf_req(chan, buf), buf);
chan->num_conf_req++;
}
-static void l2cap_conf_rfc_get(struct sock *sk, void *rsp, int len)
+static void l2cap_conf_rfc_get(struct l2cap_chan *chan, void *rsp, int len)
{
- struct l2cap_pinfo *pi = l2cap_pi(sk);
int type, olen;
unsigned long val;
struct l2cap_conf_rfc rfc;
- BT_DBG("sk %p, rsp %p, len %d", sk, rsp, len);
+ BT_DBG("chan %p, rsp %p, len %d", chan, rsp, len);
- if ((pi->mode != L2CAP_MODE_ERTM) && (pi->mode != L2CAP_MODE_STREAMING))
+ if ((chan->mode != L2CAP_MODE_ERTM) && (chan->mode != L2CAP_MODE_STREAMING))
return;
while (len >= L2CAP_CONF_OPT_SIZE) {
done:
switch (rfc.mode) {
case L2CAP_MODE_ERTM:
- pi->retrans_timeout = le16_to_cpu(rfc.retrans_timeout);
- pi->monitor_timeout = le16_to_cpu(rfc.monitor_timeout);
- pi->mps = le16_to_cpu(rfc.max_pdu_size);
+ chan->retrans_timeout = le16_to_cpu(rfc.retrans_timeout);
+ chan->monitor_timeout = le16_to_cpu(rfc.monitor_timeout);
+ chan->mps = le16_to_cpu(rfc.max_pdu_size);
break;
case L2CAP_MODE_STREAMING:
- pi->mps = le16_to_cpu(rfc.max_pdu_size);
+ chan->mps = le16_to_cpu(rfc.max_pdu_size);
}
}
goto response;
}
+ l2cap_pi(sk)->chan = chan;
+
write_lock_bh(&conn->chan_lock);
/* Check if we already have channel with that dcid */
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);
- l2cap_pi(sk)->chan = chan;
-
- dcid = l2cap_pi(sk)->scid;
+ dcid = chan->scid;
l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
chan->ident = cmd->ident;
if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_DONE) {
- if (l2cap_check_security(sk)) {
+ if (l2cap_check_security(chan)) {
if (bt_sk(sk)->defer_setup) {
sk->sk_state = BT_CONNECT2;
result = L2CAP_CR_PEND;
L2CAP_INFO_REQ, sizeof(info), &info);
}
- if (chan && !(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) &&
+ if (chan && !(chan->conf_state & L2CAP_CONF_REQ_SENT) &&
result == L2CAP_CR_SUCCESS) {
u8 buf[128];
- l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
+ chan->conf_state |= L2CAP_CONF_REQ_SENT;
l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
l2cap_build_conf_req(chan, buf), buf);
chan->num_conf_req++;
case L2CAP_CR_SUCCESS:
sk->sk_state = BT_CONFIG;
chan->ident = 0;
- l2cap_pi(sk)->dcid = dcid;
- l2cap_pi(sk)->conf_state &= ~L2CAP_CONF_CONNECT_PEND;
+ chan->dcid = dcid;
+ chan->conf_state &= ~L2CAP_CONF_CONNECT_PEND;
- if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT)
+ if (chan->conf_state & L2CAP_CONF_REQ_SENT)
break;
- l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
+ chan->conf_state |= L2CAP_CONF_REQ_SENT;
l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
l2cap_build_conf_req(chan, req), req);
break;
case L2CAP_CR_PEND:
- l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND;
+ chan->conf_state |= L2CAP_CONF_CONNECT_PEND;
break;
default:
return 0;
}
-static inline void set_default_fcs(struct l2cap_pinfo *pi)
+static inline void set_default_fcs(struct l2cap_chan *chan)
{
+ struct l2cap_pinfo *pi = l2cap_pi(chan->sk);
+
/* FCS is enabled only in ERTM or streaming mode, if one or both
* sides request it.
*/
- if (pi->mode != L2CAP_MODE_ERTM && pi->mode != L2CAP_MODE_STREAMING)
- pi->fcs = L2CAP_FCS_NONE;
- else if (!(pi->conf_state & L2CAP_CONF_NO_FCS_RECV))
- pi->fcs = L2CAP_FCS_CRC16;
+ if (chan->mode != L2CAP_MODE_ERTM && chan->mode != L2CAP_MODE_STREAMING)
+ chan->fcs = L2CAP_FCS_NONE;
+ else if (!(pi->chan->conf_state & L2CAP_CONF_NO_FCS_RECV))
+ chan->fcs = L2CAP_FCS_CRC16;
}
static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr *cmd, u16 cmd_len, u8 *data)
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;
}
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;
}
/* Reset config buffer. */
chan->conf_len = 0;
- if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_OUTPUT_DONE))
+ if (!(chan->conf_state & L2CAP_CONF_OUTPUT_DONE))
goto unlock;
- if (l2cap_pi(sk)->conf_state & L2CAP_CONF_INPUT_DONE) {
- set_default_fcs(l2cap_pi(sk));
+ if (chan->conf_state & L2CAP_CONF_INPUT_DONE) {
+ set_default_fcs(chan);
sk->sk_state = BT_CONNECTED;
chan->next_tx_seq = 0;
chan->expected_tx_seq = 0;
- __skb_queue_head_init(TX_QUEUE(sk));
- if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM)
+ skb_queue_head_init(&chan->tx_q);
+ if (chan->mode == L2CAP_MODE_ERTM)
l2cap_ertm_init(chan);
l2cap_chan_ready(sk);
goto unlock;
}
- if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT)) {
+ if (!(chan->conf_state & L2CAP_CONF_REQ_SENT)) {
u8 buf[64];
- l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
+ chan->conf_state |= L2CAP_CONF_REQ_SENT;
l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
l2cap_build_conf_req(chan, buf), buf);
chan->num_conf_req++;
switch (result) {
case L2CAP_CONF_SUCCESS:
- l2cap_conf_rfc_get(sk, rsp->data, len);
+ l2cap_conf_rfc_get(chan, rsp->data, len);
break;
case L2CAP_CONF_UNACCEPT:
/* throw out any old stored conf requests */
result = L2CAP_CONF_SUCCESS;
- len = l2cap_parse_conf_rsp(sk, rsp->data,
- len, req, &result);
+ len = l2cap_parse_conf_rsp(chan, rsp->data, len,
+ req, &result);
if (len < 0) {
l2cap_send_disconn_req(conn, chan, ECONNRESET);
goto done;
if (flags & 0x01)
goto done;
- l2cap_pi(sk)->conf_state |= L2CAP_CONF_INPUT_DONE;
+ chan->conf_state |= L2CAP_CONF_INPUT_DONE;
- if (l2cap_pi(sk)->conf_state & L2CAP_CONF_OUTPUT_DONE) {
- set_default_fcs(l2cap_pi(sk));
+ if (chan->conf_state & L2CAP_CONF_OUTPUT_DONE) {
+ set_default_fcs(chan);
sk->sk_state = BT_CONNECTED;
chan->next_tx_seq = 0;
chan->expected_tx_seq = 0;
- __skb_queue_head_init(TX_QUEUE(sk));
- if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM)
+ skb_queue_head_init(&chan->tx_q);
+ if (chan->mode == L2CAP_MODE_ERTM)
l2cap_ertm_init(chan);
l2cap_chan_ready(sk);
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;
kfree_skb(skb);
}
-static int l2cap_check_fcs(struct l2cap_pinfo *pi, struct sk_buff *skb)
+static int l2cap_check_fcs(struct l2cap_chan *chan, struct sk_buff *skb)
{
u16 our_fcs, rcv_fcs;
int hdr_size = L2CAP_HDR_SIZE + 2;
- if (pi->fcs == L2CAP_FCS_CRC16) {
+ if (chan->fcs == L2CAP_FCS_CRC16) {
skb_trim(skb, skb->len - 2);
rcv_fcs = get_unaligned_le16(skb->data + skb->len);
our_fcs = crc16(0, skb->data - hdr_size, skb->len + hdr_size);
chan->sdu_len = get_unaligned_le16(skb->data);
- if (chan->sdu_len > pi->imtu)
+ if (chan->sdu_len > chan->imtu)
goto disconnect;
chan->sdu = bt_skb_alloc(chan->sdu_len, GFP_ATOMIC);
if (!(chan->conn_state & L2CAP_CONN_SAR_RETRY)) {
chan->partial_sdu_len += skb->len;
- if (chan->partial_sdu_len > pi->imtu)
+ if (chan->partial_sdu_len > chan->imtu)
goto drop;
if (chan->partial_sdu_len != chan->sdu_len)
static int l2cap_try_push_rx_skb(struct l2cap_chan *chan)
{
- struct sock *sk = chan->sk;
struct sk_buff *skb;
u16 control;
int err;
chan->conn_state &= ~L2CAP_CONN_LOCAL_BUSY;
chan->conn_state &= ~L2CAP_CONN_RNR_SENT;
- BT_DBG("sk %p, Exit local busy", sk);
+ BT_DBG("chan %p, Exit local busy", chan);
return 0;
}
static int l2cap_streaming_reassembly_sdu(struct l2cap_chan *chan, struct sk_buff *skb, u16 control)
{
- struct l2cap_pinfo *pi = l2cap_pi(chan->sk);
struct sk_buff *_skb;
int err = -EINVAL;
chan->sdu_len = get_unaligned_le16(skb->data);
skb_pull(skb, 2);
- if (chan->sdu_len > pi->imtu) {
+ if (chan->sdu_len > chan->imtu) {
err = -EMSGSIZE;
break;
}
chan->conn_state &= ~L2CAP_CONN_SAR_SDU;
chan->partial_sdu_len += skb->len;
- if (chan->partial_sdu_len > pi->imtu)
+ if (chan->partial_sdu_len > chan->imtu)
goto drop;
if (chan->partial_sdu_len == chan->sdu_len) {
static inline int l2cap_data_channel_iframe(struct l2cap_chan *chan, u16 rx_control, struct sk_buff *skb)
{
- struct sock *sk = chan->sk;
- struct l2cap_pinfo *pi = l2cap_pi(sk);
+ struct l2cap_pinfo *pi = l2cap_pi(chan->sk);
u8 tx_seq = __get_txseq(rx_control);
u8 req_seq = __get_reqseq(rx_control);
u8 sar = rx_control >> L2CAP_CTRL_SAR_SHIFT;
int tx_seq_offset, expected_tx_seq_offset;
- int num_to_ack = (pi->tx_win/6) + 1;
+ int num_to_ack = (chan->tx_win/6) + 1;
int err = 0;
BT_DBG("chan %p len %d tx_seq %d rx_control 0x%4.4x", chan, skb->len,
tx_seq_offset += 64;
/* invalid tx_seq */
- if (tx_seq_offset >= pi->tx_win) {
+ if (tx_seq_offset >= chan->tx_win) {
l2cap_send_disconn_req(pi->conn, chan, ECONNRESET);
goto drop;
}
chan->buffer_seq = chan->buffer_seq_srej;
chan->conn_state &= ~L2CAP_CONN_SREJ_SENT;
l2cap_send_ack(chan);
- BT_DBG("sk %p, Exit SREJ_SENT", sk);
+ BT_DBG("chan %p, Exit SREJ_SENT", chan);
}
} else {
struct srej_list *l;
chan->conn_state |= L2CAP_CONN_SREJ_SENT;
- BT_DBG("sk %p, Enter SREJ", sk);
+ BT_DBG("chan %p, Enter SREJ", chan);
INIT_LIST_HEAD(&chan->srej_l);
chan->buffer_seq_srej = chan->buffer_seq;
static inline void l2cap_data_channel_rrframe(struct l2cap_chan *chan, u16 rx_control)
{
- struct sock *sk = chan->sk;
-
- BT_DBG("sk %p, req_seq %d ctrl 0x%4.4x", sk, __get_reqseq(rx_control),
+ BT_DBG("chan %p, req_seq %d ctrl 0x%4.4x", chan, __get_reqseq(rx_control),
rx_control);
chan->expected_ack_seq = __get_reqseq(rx_control);
* Receiver will miss it and start proper recovery
* procedures and ask retransmission.
*/
- if (l2cap_check_fcs(pi, skb))
+ if (l2cap_check_fcs(chan, skb))
goto drop;
if (__is_sar_start(control) && __is_iframe(control))
len -= 2;
- if (pi->fcs == L2CAP_FCS_CRC16)
+ if (chan->fcs == L2CAP_FCS_CRC16)
len -= 2;
- if (len > pi->mps) {
+ if (len > chan->mps) {
l2cap_send_disconn_req(pi->conn, chan, ECONNRESET);
goto drop;
}
sk = chan->sk;
pi = l2cap_pi(sk);
- BT_DBG("sk %p, len %d", sk, skb->len);
+ BT_DBG("chan %p, len %d", chan, skb->len);
if (sk->sk_state != BT_CONNECTED)
goto drop;
- switch (pi->mode) {
+ switch (chan->mode) {
case L2CAP_MODE_BASIC:
/* If socket recv buffers overflows we drop data here
* which is *bad* because L2CAP has to be reliable.
* But we don't have any other choice. L2CAP doesn't
* provide flow control mechanism. */
- if (pi->imtu < skb->len)
+ if (chan->imtu < skb->len)
goto drop;
if (!sock_queue_rcv_skb(sk, skb))
skb_pull(skb, 2);
len = skb->len;
- if (l2cap_check_fcs(pi, skb))
+ if (l2cap_check_fcs(chan, skb))
goto drop;
if (__is_sar_start(control))
len -= 2;
- if (pi->fcs == L2CAP_FCS_CRC16)
+ if (chan->fcs == L2CAP_FCS_CRC16)
len -= 2;
- if (len > pi->mps || len < 0 || __is_sframe(control))
+ if (len > chan->mps || len < 0 || __is_sframe(control))
goto drop;
tx_seq = __get_txseq(control);
goto done;
default:
- BT_DBG("sk %p: bad mode 0x%2.2x", sk, pi->mode);
+ BT_DBG("chan %p: bad mode 0x%2.2x", chan, chan->mode);
break;
}
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_CONNECTED)
goto drop;
- if (l2cap_pi(sk)->imtu < skb->len)
+ if (l2cap_pi(sk)->chan->imtu < skb->len)
+ goto drop;
+
+ if (!sock_queue_rcv_skb(sk, skb))
+ goto done;
+
+drop:
+ kfree_skb(skb);
+
+done:
+ if (sk)
+ bh_unlock_sock(sk);
+ return 0;
+}
+
+static inline int l2cap_att_channel(struct l2cap_conn *conn, __le16 cid, struct sk_buff *skb)
+{
+ struct sock *sk;
+
+ sk = l2cap_get_sock_by_scid(0, cid, conn->src);
+ if (!sk)
+ goto drop;
+
+ bh_lock_sock(sk);
+
+ BT_DBG("sk %p, len %d", sk, skb->len);
+
+ if (sk->sk_state != BT_BOUND && sk->sk_state != BT_CONNECTED)
+ goto drop;
+
+ if (l2cap_pi(sk)->chan->imtu < skb->len)
goto drop;
if (!sock_queue_rcv_skb(sk, skb))
l2cap_conless_channel(conn, psm, skb);
break;
+ case L2CAP_CID_LE_DATA:
+ l2cap_att_channel(conn, cid, skb);
+ break;
+
default:
l2cap_data_channel(conn, cid, skb);
break;
/* Find listening sockets and check their link_mode */
read_lock(&l2cap_sk_list.lock);
sk_for_each(sk, node, &l2cap_sk_list.head) {
+ struct l2cap_chan *chan = l2cap_pi(sk)->chan;
+
if (sk->sk_state != BT_LISTEN)
continue;
if (!bacmp(&bt_sk(sk)->src, &hdev->bdaddr)) {
lm1 |= HCI_LM_ACCEPT;
- if (l2cap_pi(sk)->role_switch)
+ if (chan->role_switch)
lm1 |= HCI_LM_MASTER;
exact++;
} else if (!bacmp(&bt_sk(sk)->src, BDADDR_ANY)) {
lm2 |= HCI_LM_ACCEPT;
- if (l2cap_pi(sk)->role_switch)
+ if (chan->role_switch)
lm2 |= HCI_LM_MASTER;
}
}
return 0;
}
-static inline void l2cap_check_encryption(struct sock *sk, u8 encrypt)
+static inline void l2cap_check_encryption(struct l2cap_chan *chan, u8 encrypt)
{
+ struct sock *sk = chan->sk;
+
if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM)
return;
if (encrypt == 0x00) {
- if (l2cap_pi(sk)->sec_level == BT_SECURITY_MEDIUM) {
+ if (chan->sec_level == BT_SECURITY_MEDIUM) {
l2cap_sock_clear_timer(sk);
l2cap_sock_set_timer(sk, HZ * 5);
- } else if (l2cap_pi(sk)->sec_level == BT_SECURITY_HIGH)
+ } else if (chan->sec_level == BT_SECURITY_HIGH)
__l2cap_sock_close(sk, ECONNREFUSED);
} else {
- if (l2cap_pi(sk)->sec_level == BT_SECURITY_MEDIUM)
+ if (chan->sec_level == BT_SECURITY_MEDIUM)
l2cap_sock_clear_timer(sk);
}
}
bh_lock_sock(sk);
- if (l2cap_pi(sk)->conf_state & L2CAP_CONF_CONNECT_PEND) {
+ if (chan->conf_state & L2CAP_CONF_CONNECT_PEND) {
bh_unlock_sock(sk);
continue;
}
if (!status && (sk->sk_state == BT_CONNECTED ||
sk->sk_state == BT_CONFIG)) {
- l2cap_check_encryption(sk, encrypt);
+ l2cap_check_encryption(chan, encrypt);
bh_unlock_sock(sk);
continue;
}
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);
- l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND;
+ chan->conf_state |= L2CAP_CONF_CONNECT_PEND;
l2cap_send_cmd(conn, chan->ident,
L2CAP_CONN_REQ, sizeof(req), &req);
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,
if (chan && chan->sk) {
struct sock *sk = chan->sk;
- if (l2cap_pi(sk)->imtu < len - L2CAP_HDR_SIZE) {
+ if (chan->imtu < len - L2CAP_HDR_SIZE) {
BT_ERR("Frame exceeding recv MTU (len %d, "
"MTU %d)", len,
- l2cap_pi(sk)->imtu);
+ chan->imtu);
bh_unlock_sock(sk);
l2cap_conn_unreliable(conn, ECOMM);
goto drop;
sk_for_each(sk, node, &l2cap_sk_list.head) {
struct l2cap_pinfo *pi = l2cap_pi(sk);
+ struct l2cap_chan *chan = pi->chan;
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,
- pi->imtu, pi->omtu, pi->sec_level,
- pi->mode);
+ sk->sk_state, __le16_to_cpu(chan->psm),
+ chan->scid, chan->dcid,
+ chan->imtu, chan->omtu, chan->sec_level,
+ chan->mode);
}
read_unlock_bh(&l2cap_sk_list.lock);
git.openpandora.org / pandora-kernel.git / blobdiff