#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/l2cap.h>
#include <net/bluetooth/smp.h>
+#include <net/bluetooth/a2mp.h>
bool disable_ertm;
state_to_string(state));
chan->state = state;
- chan->ops->state_change(chan->data, state);
+ chan->ops->state_change(chan, state);
}
static void l2cap_state_change(struct l2cap_chan *chan, int state)
l2cap_chan_unlock(chan);
- chan->ops->close(chan->data);
+ chan->ops->close(chan);
mutex_unlock(&conn->chan_lock);
l2cap_chan_put(chan);
case L2CAP_CHAN_CONN_ORIENTED:
if (conn->hcon->type == LE_LINK) {
/* LE connection */
- chan->omtu = L2CAP_LE_DEFAULT_MTU;
+ chan->omtu = L2CAP_DEFAULT_MTU;
chan->scid = L2CAP_CID_LE_DATA;
chan->dcid = L2CAP_CID_LE_DATA;
} else {
chan->omtu = L2CAP_DEFAULT_MTU;
break;
+ case L2CAP_CHAN_CONN_FIX_A2MP:
+ chan->scid = L2CAP_CID_A2MP;
+ chan->dcid = L2CAP_CID_A2MP;
+ chan->omtu = L2CAP_A2MP_DEFAULT_MTU;
+ chan->imtu = L2CAP_A2MP_DEFAULT_MTU;
+ break;
+
default:
/* Raw socket can send/recv signalling messages only */
chan->scid = L2CAP_CID_SIGNALING;
list_add(&chan->list, &conn->chan_l);
}
-static void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan)
+void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan)
{
mutex_lock(&conn->chan_lock);
__l2cap_chan_add(conn, chan);
mutex_unlock(&conn->chan_lock);
}
-static void l2cap_chan_del(struct l2cap_chan *chan, int err)
+void l2cap_chan_del(struct l2cap_chan *chan, int err)
{
- struct sock *sk = chan->sk;
struct l2cap_conn *conn = chan->conn;
- struct sock *parent = bt_sk(sk)->parent;
__clear_chan_timer(chan);
l2cap_chan_put(chan);
chan->conn = NULL;
- hci_conn_put(conn->hcon);
- }
-
- lock_sock(sk);
- __l2cap_state_change(chan, BT_CLOSED);
- sock_set_flag(sk, SOCK_ZAPPED);
-
- if (err)
- __l2cap_chan_set_err(chan, err);
-
- if (parent) {
- bt_accept_unlink(sk);
- parent->sk_data_ready(parent, 0);
- } else
- sk->sk_state_change(sk);
+ if (chan->chan_type != L2CAP_CHAN_CONN_FIX_A2MP)
+ hci_conn_put(conn->hcon);
+ }
- release_sock(sk);
+ if (chan->ops->teardown)
+ chan->ops->teardown(chan, err);
if (test_bit(CONF_NOT_COMPLETE, &chan->conf_state))
return;
return;
}
-static void l2cap_chan_cleanup_listen(struct sock *parent)
-{
- struct sock *sk;
-
- BT_DBG("parent %p", parent);
-
- /* Close not yet accepted channels */
- while ((sk = bt_accept_dequeue(parent, NULL))) {
- struct l2cap_chan *chan = l2cap_pi(sk)->chan;
-
- l2cap_chan_lock(chan);
- __clear_chan_timer(chan);
- l2cap_chan_close(chan, ECONNRESET);
- l2cap_chan_unlock(chan);
-
- chan->ops->close(chan->data);
- }
-}
-
void l2cap_chan_close(struct l2cap_chan *chan, int reason)
{
struct l2cap_conn *conn = chan->conn;
switch (chan->state) {
case BT_LISTEN:
- lock_sock(sk);
- l2cap_chan_cleanup_listen(sk);
-
- __l2cap_state_change(chan, BT_CLOSED);
- sock_set_flag(sk, SOCK_ZAPPED);
- release_sock(sk);
+ if (chan->ops->teardown)
+ chan->ops->teardown(chan, 0);
break;
case BT_CONNECTED:
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);
+ rsp.status = __constant_cpu_to_le16(L2CAP_CS_NO_INFO);
l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_RSP,
sizeof(rsp), &rsp);
}
break;
default:
- lock_sock(sk);
- sock_set_flag(sk, SOCK_ZAPPED);
- release_sock(sk);
+ if (chan->ops->teardown)
+ chan->ops->teardown(chan, 0);
break;
}
}
default:
return HCI_AT_NO_BONDING;
}
- } else if (chan->psm == cpu_to_le16(0x0001)) {
+ } else if (chan->psm == __constant_cpu_to_le16(L2CAP_PSM_SDP)) {
if (chan->sec_level == BT_SECURITY_LOW)
chan->sec_level = BT_SECURITY_SDP;
}
}
+static inline unsigned int __ertm_hdr_size(struct l2cap_chan *chan)
+{
+ if (test_bit(FLAG_EXT_CTRL, &chan->flags))
+ return L2CAP_EXT_HDR_SIZE;
+ else
+ return L2CAP_ENH_HDR_SIZE;
+}
+
static struct sk_buff *l2cap_create_sframe_pdu(struct l2cap_chan *chan,
u32 control)
{
struct sk_buff *skb;
struct l2cap_hdr *lh;
- int hlen;
-
- if (test_bit(FLAG_EXT_CTRL, &chan->flags))
- hlen = L2CAP_EXT_HDR_SIZE;
- else
- hlen = L2CAP_ENH_HDR_SIZE;
+ int hlen = __ertm_hdr_size(chan);
if (chan->fcs == L2CAP_FCS_CRC16)
hlen += L2CAP_FCS_SIZE;
static void l2cap_chan_ready(struct l2cap_chan *chan)
{
- struct sock *sk = chan->sk;
- struct sock *parent;
-
- lock_sock(sk);
-
- parent = bt_sk(sk)->parent;
-
- BT_DBG("sk %p, parent %p", sk, parent);
-
/* This clears all conf flags, including CONF_NOT_COMPLETE */
chan->conf_state = 0;
__clear_chan_timer(chan);
- __l2cap_state_change(chan, BT_CONNECTED);
- sk->sk_state_change(sk);
+ chan->state = BT_CONNECTED;
- if (parent)
- parent->sk_data_ready(parent, 0);
-
- release_sock(sk);
+ chan->ops->ready(chan);
}
static void l2cap_do_start(struct l2cap_chan *chan)
l2cap_send_conn_req(chan);
} else {
struct l2cap_info_req req;
- req.type = cpu_to_le16(L2CAP_IT_FEAT_MASK);
+ req.type = __constant_cpu_to_le16(L2CAP_IT_FEAT_MASK);
conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_SENT;
conn->info_ident = l2cap_get_ident(conn);
__clear_ack_timer(chan);
}
+ if (chan->chan_type == L2CAP_CHAN_CONN_FIX_A2MP) {
+ __l2cap_state_change(chan, BT_DISCONN);
+ return;
+ }
+
req.dcid = cpu_to_le16(chan->dcid);
req.scid = cpu_to_le16(chan->scid);
l2cap_send_cmd(conn, l2cap_get_ident(conn),
if (test_bit(BT_SK_DEFER_SETUP,
&bt_sk(sk)->flags)) {
struct sock *parent = bt_sk(sk)->parent;
- rsp.result = cpu_to_le16(L2CAP_CR_PEND);
- rsp.status = cpu_to_le16(L2CAP_CS_AUTHOR_PEND);
+ rsp.result = __constant_cpu_to_le16(L2CAP_CR_PEND);
+ rsp.status = __constant_cpu_to_le16(L2CAP_CS_AUTHOR_PEND);
if (parent)
parent->sk_data_ready(parent, 0);
} else {
__l2cap_state_change(chan, BT_CONFIG);
- rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS);
- rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO);
+ rsp.result = __constant_cpu_to_le16(L2CAP_CR_SUCCESS);
+ rsp.status = __constant_cpu_to_le16(L2CAP_CS_NO_INFO);
}
release_sock(sk);
} else {
- rsp.result = cpu_to_le16(L2CAP_CR_PEND);
- rsp.status = cpu_to_le16(L2CAP_CS_AUTHEN_PEND);
+ rsp.result = __constant_cpu_to_le16(L2CAP_CR_PEND);
+ rsp.status = __constant_cpu_to_le16(L2CAP_CS_AUTHEN_PEND);
}
l2cap_send_cmd(conn, chan->ident, L2CAP_CONN_RSP,
lock_sock(parent);
- /* Check for backlog size */
- if (sk_acceptq_is_full(parent)) {
- BT_DBG("backlog full %d", parent->sk_ack_backlog);
- goto clean;
- }
-
- chan = pchan->ops->new_connection(pchan->data);
+ chan = pchan->ops->new_connection(pchan);
if (!chan)
goto clean;
l2cap_chan_add(conn, chan);
- __set_chan_timer(chan, sk->sk_sndtimeo);
-
- __l2cap_state_change(chan, BT_CONNECTED);
- parent->sk_data_ready(parent, 0);
+ l2cap_chan_ready(chan);
clean:
release_sock(parent);
l2cap_chan_lock(chan);
+ if (chan->chan_type == L2CAP_CHAN_CONN_FIX_A2MP) {
+ l2cap_chan_unlock(chan);
+ continue;
+ }
+
if (conn->hcon->type == LE_LINK) {
if (smp_conn_security(conn, chan->sec_level))
l2cap_chan_ready(chan);
l2cap_chan_unlock(chan);
- chan->ops->close(chan->data);
+ chan->ops->close(chan);
l2cap_chan_put(chan);
}
struct l2cap_conn *conn = container_of(work, struct l2cap_conn,
security_timer.work);
- l2cap_conn_del(conn->hcon, ETIMEDOUT);
+ BT_DBG("conn %p", conn);
+
+ if (test_and_clear_bit(HCI_CONN_LE_SMP_PEND, &conn->hcon->flags)) {
+ smp_chan_destroy(conn);
+ l2cap_conn_del(conn->hcon, ETIMEDOUT);
+ }
}
static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status)
goto done;
}
- lock_sock(sk);
-
- switch (sk->sk_state) {
+ switch (chan->state) {
case BT_CONNECT:
case BT_CONNECT2:
case BT_CONFIG:
/* Already connecting */
err = 0;
- release_sock(sk);
goto done;
case BT_CONNECTED:
/* Already connected */
err = -EISCONN;
- release_sock(sk);
goto done;
case BT_OPEN:
default:
err = -EBADFD;
- release_sock(sk);
goto done;
}
/* Set destination address and psm */
+ lock_sock(sk);
bacpy(&bt_sk(sk)->dst, dst);
-
release_sock(sk);
chan->psm = psm;
if (!conn)
return ERR_PTR(-ENOTCONN);
- if (test_bit(FLAG_EXT_CTRL, &chan->flags))
- hlen = L2CAP_EXT_HDR_SIZE;
- else
- hlen = L2CAP_ENH_HDR_SIZE;
+ hlen = __ertm_hdr_size(chan);
if (sdulen)
hlen += L2CAP_SDULEN_SIZE;
struct sk_buff *skb;
u16 sdu_len;
size_t pdu_len;
- int err = 0;
u8 sar;
BT_DBG("chan %p, msg %p, len %d", chan, msg, (int)len);
pdu_len = min_t(size_t, pdu_len, L2CAP_BREDR_MAX_PAYLOAD);
/* Adjust for largest possible L2CAP overhead. */
- pdu_len -= L2CAP_EXT_HDR_SIZE + L2CAP_FCS_SIZE;
+ if (chan->fcs)
+ pdu_len -= L2CAP_FCS_SIZE;
+
+ pdu_len -= __ertm_hdr_size(chan);
/* Remote device may have requested smaller PDUs */
pdu_len = min_t(size_t, pdu_len, chan->remote_mps);
}
}
- return err;
+ return 0;
}
int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
if (!nskb)
continue;
- if (chan->ops->recv(chan->data, nskb))
+ if (chan->ops->recv(chan, nskb))
kfree_skb(nskb);
}
lh->len = cpu_to_le16(L2CAP_CMD_HDR_SIZE + dlen);
if (conn->hcon->type == LE_LINK)
- lh->cid = cpu_to_le16(L2CAP_CID_LE_SIGNALING);
+ lh->cid = __constant_cpu_to_le16(L2CAP_CID_LE_SIGNALING);
else
- lh->cid = cpu_to_le16(L2CAP_CID_SIGNALING);
+ lh->cid = __constant_cpu_to_le16(L2CAP_CID_SIGNALING);
cmd = (struct l2cap_cmd_hdr *) skb_put(skb, L2CAP_CMD_HDR_SIZE);
cmd->code = code;
efs.stype = chan->local_stype;
efs.msdu = cpu_to_le16(chan->local_msdu);
efs.sdu_itime = cpu_to_le32(chan->local_sdu_itime);
- efs.acc_lat = cpu_to_le32(L2CAP_DEFAULT_ACC_LAT);
- efs.flush_to = cpu_to_le32(L2CAP_DEFAULT_FLUSH_TO);
+ efs.acc_lat = __constant_cpu_to_le32(L2CAP_DEFAULT_ACC_LAT);
+ efs.flush_to = __constant_cpu_to_le32(L2CAP_DEFAULT_FLUSH_TO);
break;
case L2CAP_MODE_STREAMING:
l2cap_chan_put(chan);
}
-static inline int l2cap_ertm_init(struct l2cap_chan *chan)
+int l2cap_ertm_init(struct l2cap_chan *chan)
{
int err;
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);
+ rsp.result = __constant_cpu_to_le16(L2CAP_CR_SUCCESS);
+ rsp.status = __constant_cpu_to_le16(L2CAP_CS_NO_INFO);
l2cap_send_cmd(conn, chan->ident,
L2CAP_CONN_RSP, sizeof(rsp), &rsp);
* did not send an RFC option.
*/
rfc.mode = chan->mode;
- rfc.retrans_timeout = cpu_to_le16(L2CAP_DEFAULT_RETRANS_TO);
- rfc.monitor_timeout = cpu_to_le16(L2CAP_DEFAULT_MONITOR_TO);
+ rfc.retrans_timeout = __constant_cpu_to_le16(L2CAP_DEFAULT_RETRANS_TO);
+ rfc.monitor_timeout = __constant_cpu_to_le16(L2CAP_DEFAULT_MONITOR_TO);
rfc.max_pdu_size = cpu_to_le16(chan->imtu);
BT_ERR("Expected RFC option was not found, using defaults");
lock_sock(parent);
/* Check if the ACL is secure enough (if not SDP) */
- if (psm != cpu_to_le16(0x0001) &&
+ if (psm != __constant_cpu_to_le16(L2CAP_PSM_SDP) &&
!hci_conn_check_link_mode(conn->hcon)) {
conn->disc_reason = HCI_ERROR_AUTH_FAILURE;
result = L2CAP_CR_SEC_BLOCK;
result = L2CAP_CR_NO_MEM;
- /* Check for backlog size */
- if (sk_acceptq_is_full(parent)) {
- BT_DBG("backlog full %d", parent->sk_ack_backlog);
+ /* Check if we already have channel with that dcid */
+ if (__l2cap_get_chan_by_dcid(conn, scid))
goto response;
- }
- chan = pchan->ops->new_connection(pchan->data);
+ chan = pchan->ops->new_connection(pchan);
if (!chan)
goto response;
sk = chan->sk;
- /* Check if we already have channel with that dcid */
- if (__l2cap_get_chan_by_dcid(conn, scid)) {
- sock_set_flag(sk, SOCK_ZAPPED);
- chan->ops->close(chan->data);
- goto response;
- }
-
hci_conn_hold(conn->hcon);
bacpy(&bt_sk(sk)->src, conn->src);
if (result == L2CAP_CR_PEND && status == L2CAP_CS_NO_INFO) {
struct l2cap_info_req info;
- info.type = cpu_to_le16(L2CAP_IT_FEAT_MASK);
+ info.type = __constant_cpu_to_le16(L2CAP_IT_FEAT_MASK);
conn->info_state |= L2CAP_INFO_FEAT_MASK_REQ_SENT;
conn->info_ident = l2cap_get_ident(conn);
if (chan->state != BT_CONFIG && chan->state != BT_CONNECT2) {
struct l2cap_cmd_rej_cid rej;
- rej.reason = cpu_to_le16(L2CAP_REJ_INVALID_CID);
+ rej.reason = __constant_cpu_to_le16(L2CAP_REJ_INVALID_CID);
rej.scid = cpu_to_le16(chan->scid);
rej.dcid = cpu_to_le16(chan->dcid);
if (test_bit(CONF_INPUT_DONE, &chan->conf_state)) {
set_default_fcs(chan);
- l2cap_state_change(chan, BT_CONNECTED);
-
if (chan->mode == L2CAP_MODE_ERTM ||
chan->mode == L2CAP_MODE_STREAMING)
err = l2cap_ertm_init(chan);
if (test_bit(CONF_OUTPUT_DONE, &chan->conf_state)) {
set_default_fcs(chan);
- l2cap_state_change(chan, BT_CONNECTED);
if (chan->mode == L2CAP_MODE_ERTM ||
chan->mode == L2CAP_MODE_STREAMING)
err = l2cap_ertm_init(chan);
l2cap_chan_unlock(chan);
- chan->ops->close(chan->data);
+ chan->ops->close(chan);
l2cap_chan_put(chan);
mutex_unlock(&conn->chan_lock);
l2cap_chan_unlock(chan);
- chan->ops->close(chan->data);
+ chan->ops->close(chan);
l2cap_chan_put(chan);
mutex_unlock(&conn->chan_lock);
u8 buf[8];
u32 feat_mask = l2cap_feat_mask;
struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) buf;
- rsp->type = cpu_to_le16(L2CAP_IT_FEAT_MASK);
- rsp->result = cpu_to_le16(L2CAP_IR_SUCCESS);
+ rsp->type = __constant_cpu_to_le16(L2CAP_IT_FEAT_MASK);
+ rsp->result = __constant_cpu_to_le16(L2CAP_IR_SUCCESS);
if (!disable_ertm)
feat_mask |= L2CAP_FEAT_ERTM | L2CAP_FEAT_STREAMING
| L2CAP_FEAT_FCS;
else
l2cap_fixed_chan[0] &= ~L2CAP_FC_A2MP;
- rsp->type = cpu_to_le16(L2CAP_IT_FIXED_CHAN);
- rsp->result = cpu_to_le16(L2CAP_IR_SUCCESS);
+ rsp->type = __constant_cpu_to_le16(L2CAP_IT_FIXED_CHAN);
+ rsp->result = __constant_cpu_to_le16(L2CAP_IR_SUCCESS);
memcpy(rsp->data, l2cap_fixed_chan, sizeof(l2cap_fixed_chan));
l2cap_send_cmd(conn, cmd->ident,
L2CAP_INFO_RSP, sizeof(buf), buf);
} else {
struct l2cap_info_rsp rsp;
rsp.type = cpu_to_le16(type);
- rsp.result = cpu_to_le16(L2CAP_IR_NOTSUPP);
+ rsp.result = __constant_cpu_to_le16(L2CAP_IR_NOTSUPP);
l2cap_send_cmd(conn, cmd->ident,
L2CAP_INFO_RSP, sizeof(rsp), &rsp);
}
if (conn->feat_mask & L2CAP_FEAT_FIXED_CHAN) {
struct l2cap_info_req req;
- req.type = cpu_to_le16(L2CAP_IT_FIXED_CHAN);
+ req.type = __constant_cpu_to_le16(L2CAP_IT_FIXED_CHAN);
conn->info_ident = l2cap_get_ident(conn);
err = l2cap_check_conn_param(min, max, latency, to_multiplier);
if (err)
- rsp.result = cpu_to_le16(L2CAP_CONN_PARAM_REJECTED);
+ rsp.result = __constant_cpu_to_le16(L2CAP_CONN_PARAM_REJECTED);
else
- rsp.result = cpu_to_le16(L2CAP_CONN_PARAM_ACCEPTED);
+ rsp.result = __constant_cpu_to_le16(L2CAP_CONN_PARAM_ACCEPTED);
l2cap_send_cmd(conn, cmd->ident, L2CAP_CONN_PARAM_UPDATE_RSP,
sizeof(rsp), &rsp);
BT_ERR("Wrong link type (%d)", err);
/* FIXME: Map err to a valid reason */
- rej.reason = cpu_to_le16(L2CAP_REJ_NOT_UNDERSTOOD);
+ rej.reason = __constant_cpu_to_le16(L2CAP_REJ_NOT_UNDERSTOOD);
l2cap_send_cmd(conn, cmd.ident, L2CAP_COMMAND_REJ, sizeof(rej), &rej);
}
if (chan->sdu)
break;
- err = chan->ops->recv(chan->data, skb);
+ err = chan->ops->recv(chan, skb);
break;
case L2CAP_SAR_START:
if (chan->sdu->len != chan->sdu_len)
break;
- err = chan->ops->recv(chan->data, chan->sdu);
+ err = chan->ops->recv(chan, chan->sdu);
if (!err) {
/* Reassembly complete */
return 0;
}
-static inline int l2cap_data_channel(struct l2cap_conn *conn, u16 cid, struct sk_buff *skb)
+static void l2cap_data_channel(struct l2cap_conn *conn, u16 cid,
+ struct sk_buff *skb)
{
struct l2cap_chan *chan;
chan = l2cap_get_chan_by_scid(conn, cid);
if (!chan) {
- BT_DBG("unknown cid 0x%4.4x", cid);
- /* Drop packet and return */
- kfree_skb(skb);
- return 0;
+ if (cid == L2CAP_CID_A2MP) {
+ chan = a2mp_channel_create(conn, skb);
+ if (!chan) {
+ kfree_skb(skb);
+ return;
+ }
+
+ l2cap_chan_lock(chan);
+ } else {
+ BT_DBG("unknown cid 0x%4.4x", cid);
+ /* Drop packet and return */
+ kfree_skb(skb);
+ return;
+ }
}
BT_DBG("chan %p, len %d", chan, skb->len);
if (chan->imtu < skb->len)
goto drop;
- if (!chan->ops->recv(chan->data, skb))
+ if (!chan->ops->recv(chan, skb))
goto done;
break;
done:
l2cap_chan_unlock(chan);
-
- return 0;
}
-static inline int l2cap_conless_channel(struct l2cap_conn *conn, __le16 psm, struct sk_buff *skb)
+static void l2cap_conless_channel(struct l2cap_conn *conn, __le16 psm,
+ struct sk_buff *skb)
{
struct l2cap_chan *chan;
if (chan->imtu < skb->len)
goto drop;
- if (!chan->ops->recv(chan->data, skb))
- return 0;
+ if (!chan->ops->recv(chan, skb))
+ return;
drop:
kfree_skb(skb);
-
- return 0;
}
-static inline int l2cap_att_channel(struct l2cap_conn *conn, u16 cid,
- struct sk_buff *skb)
+static void l2cap_att_channel(struct l2cap_conn *conn, u16 cid,
+ struct sk_buff *skb)
{
struct l2cap_chan *chan;
if (chan->imtu < skb->len)
goto drop;
- if (!chan->ops->recv(chan->data, skb))
- return 0;
+ if (!chan->ops->recv(chan, skb))
+ return;
drop:
kfree_skb(skb);
-
- return 0;
}
static void l2cap_recv_frame(struct l2cap_conn *conn, struct sk_buff *skb)
case L2CAP_CID_CONN_LESS:
psm = get_unaligned((__le16 *) skb->data);
- skb_pull(skb, 2);
+ skb_pull(skb, L2CAP_PSMLEN_SIZE);
l2cap_conless_channel(conn, psm, skb);
break;
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