static void l2cap_set_timer(struct l2cap_chan *chan, struct timer_list *timer, long timeout)
{
- BT_DBG("chan %p state %d timeout %ld", chan->sk, chan->state, timeout);
+ BT_DBG("chan %p state %d timeout %ld", chan, chan->state, timeout);
if (!mod_timer(timer, jiffies + msecs_to_jiffies(timeout)))
chan_hold(chan);
chan->omtu = L2CAP_DEFAULT_MTU;
}
+ chan->local_id = L2CAP_BESTEFFORT_ID;
+ chan->local_stype = L2CAP_SERV_BESTEFFORT;
+ chan->local_msdu = L2CAP_DEFAULT_MAX_SDU_SIZE;
+ chan->local_sdu_itime = L2CAP_DEFAULT_SDU_ITIME;
+ chan->local_acc_lat = L2CAP_DEFAULT_ACC_LAT;
+ chan->local_flush_to = L2CAP_DEFAULT_FLUSH_TO;
+
chan_hold(chan);
list_add(&chan->list, &conn->chan_l);
flags = ACL_START;
bt_cb(skb)->force_active = BT_POWER_FORCE_ACTIVE_ON;
+ skb->priority = HCI_PRIO_MAX;
+
+ hci_send_acl(conn->hchan, skb, flags);
+}
+
+static void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb)
+{
+ struct hci_conn *hcon = chan->conn->hcon;
+ u16 flags;
+
+ BT_DBG("chan %p, skb %p len %d priority %u", chan, skb, skb->len,
+ skb->priority);
+
+ if (!test_bit(FLAG_FLUSHABLE, &chan->flags) &&
+ lmp_no_flush_capable(hcon->hdev))
+ flags = ACL_START_NO_FLUSH;
+ else
+ flags = ACL_START;
- hci_send_acl(conn->hcon, skb, flags);
+ bt_cb(skb)->force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags);
+ hci_send_acl(chan->conn->hchan, skb, flags);
}
-static inline void l2cap_send_sframe(struct l2cap_chan *chan, u16 control)
+static inline void l2cap_send_sframe(struct l2cap_chan *chan, u32 control)
{
struct sk_buff *skb;
struct l2cap_hdr *lh;
struct l2cap_conn *conn = chan->conn;
- int count, hlen = L2CAP_HDR_SIZE + 2;
- u8 flags;
+ int count, hlen;
if (chan->state != BT_CONNECTED)
return;
+ if (test_bit(FLAG_EXT_CTRL, &chan->flags))
+ hlen = L2CAP_EXT_HDR_SIZE;
+ else
+ hlen = L2CAP_ENH_HDR_SIZE;
+
if (chan->fcs == L2CAP_FCS_CRC16)
- hlen += 2;
+ hlen += L2CAP_FCS_SIZE;
- BT_DBG("chan %p, control 0x%2.2x", chan, control);
+ BT_DBG("chan %p, control 0x%8.8x", chan, control);
count = min_t(unsigned int, conn->mtu, hlen);
- control |= L2CAP_CTRL_FRAME_TYPE;
+
+ control |= __set_sframe(chan);
if (test_and_clear_bit(CONN_SEND_FBIT, &chan->conn_state))
- control |= L2CAP_CTRL_FINAL;
+ control |= __set_ctrl_final(chan);
if (test_and_clear_bit(CONN_SEND_PBIT, &chan->conn_state))
- control |= L2CAP_CTRL_POLL;
+ control |= __set_ctrl_poll(chan);
skb = bt_skb_alloc(count, GFP_ATOMIC);
if (!skb)
lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
lh->len = cpu_to_le16(hlen - L2CAP_HDR_SIZE);
lh->cid = cpu_to_le16(chan->dcid);
- put_unaligned_le16(control, skb_put(skb, 2));
+
+ __put_control(chan, control, skb_put(skb, __ctrl_size(chan)));
if (chan->fcs == L2CAP_FCS_CRC16) {
- u16 fcs = crc16(0, (u8 *)lh, count - 2);
- put_unaligned_le16(fcs, skb_put(skb, 2));
+ u16 fcs = crc16(0, (u8 *)lh, count - L2CAP_FCS_SIZE);
+ put_unaligned_le16(fcs, skb_put(skb, L2CAP_FCS_SIZE));
}
- if (lmp_no_flush_capable(conn->hcon->hdev))
- flags = ACL_START_NO_FLUSH;
- else
- flags = ACL_START;
-
- bt_cb(skb)->force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags);
-
- hci_send_acl(chan->conn->hcon, skb, flags);
+ skb->priority = HCI_PRIO_MAX;
+ l2cap_do_send(chan, skb);
}
-static inline void l2cap_send_rr_or_rnr(struct l2cap_chan *chan, u16 control)
+static inline void l2cap_send_rr_or_rnr(struct l2cap_chan *chan, u32 control)
{
if (test_bit(CONN_LOCAL_BUSY, &chan->conn_state)) {
control |= __set_ctrl_super(chan, L2CAP_SUPER_RNR);
} else
control |= __set_ctrl_super(chan, L2CAP_SUPER_RR);
- control |= chan->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
+ control |= __set_reqseq(chan, chan->buffer_seq);
l2cap_send_sframe(chan, control);
}
chan->ops->close(chan->data);
}
+ hci_chan_del(conn->hchan);
+
if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT)
del_timer_sync(&conn->info_timer);
static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon, u8 status)
{
struct l2cap_conn *conn = hcon->l2cap_data;
+ struct hci_chan *hchan;
if (conn || status)
return conn;
+ hchan = hci_chan_create(hcon);
+ if (!hchan)
+ return NULL;
+
conn = kzalloc(sizeof(struct l2cap_conn), GFP_ATOMIC);
- if (!conn)
+ if (!conn) {
+ hci_chan_del(hchan);
return NULL;
+ }
hcon->l2cap_data = conn;
conn->hcon = hcon;
+ conn->hchan = hchan;
- BT_DBG("hcon %p conn %p", hcon, conn);
+ BT_DBG("hcon %p conn %p hchan %p", hcon, conn, hchan);
if (hcon->hdev->le_mtu && hcon->type == LE_LINK)
conn->mtu = hcon->hdev->le_mtu;
__clear_retrans_timer(chan);
}
-static void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb)
-{
- struct hci_conn *hcon = chan->conn->hcon;
- u16 flags;
-
- BT_DBG("chan %p, skb %p len %d", chan, skb, skb->len);
-
- if (!test_bit(FLAG_FLUSHABLE, &chan->flags) &&
- lmp_no_flush_capable(hcon->hdev))
- flags = ACL_START_NO_FLUSH;
- else
- flags = ACL_START;
-
- bt_cb(skb)->force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags);
- hci_send_acl(hcon, skb, flags);
-}
-
static void l2cap_streaming_send(struct l2cap_chan *chan)
{
struct sk_buff *skb;
- u16 control, fcs;
+ u32 control;
+ u16 fcs;
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);
+ control = __get_control(chan, skb->data + L2CAP_HDR_SIZE);
+ control |= __set_txseq(chan, chan->next_tx_seq);
+ __put_control(chan, control, skb->data + L2CAP_HDR_SIZE);
if (chan->fcs == L2CAP_FCS_CRC16) {
- fcs = crc16(0, (u8 *)skb->data, skb->len - 2);
- put_unaligned_le16(fcs, skb->data + skb->len - 2);
+ fcs = crc16(0, (u8 *)skb->data,
+ skb->len - L2CAP_FCS_SIZE);
+ put_unaligned_le16(fcs,
+ skb->data + skb->len - L2CAP_FCS_SIZE);
}
l2cap_do_send(chan, skb);
- chan->next_tx_seq = (chan->next_tx_seq + 1) % 64;
+ chan->next_tx_seq = __next_seq(chan, chan->next_tx_seq);
}
}
-static void l2cap_retransmit_one_frame(struct l2cap_chan *chan, u8 tx_seq)
+static void l2cap_retransmit_one_frame(struct l2cap_chan *chan, u16 tx_seq)
{
struct sk_buff *skb, *tx_skb;
- u16 control, fcs;
+ u16 fcs;
+ u32 control;
skb = skb_peek(&chan->tx_q);
if (!skb)
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;
+
+ control = __get_control(chan, tx_skb->data + L2CAP_HDR_SIZE);
+ control &= __get_sar_mask(chan);
if (test_and_clear_bit(CONN_SEND_FBIT, &chan->conn_state))
- control |= L2CAP_CTRL_FINAL;
+ control |= __set_ctrl_final(chan);
- control |= (chan->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT)
- | (tx_seq << L2CAP_CTRL_TXSEQ_SHIFT);
+ control |= __set_reqseq(chan, chan->buffer_seq);
+ control |= __set_txseq(chan, tx_seq);
- put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE);
+ __put_control(chan, control, tx_skb->data + L2CAP_HDR_SIZE);
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);
+ fcs = crc16(0, (u8 *)tx_skb->data,
+ tx_skb->len - L2CAP_FCS_SIZE);
+ put_unaligned_le16(fcs,
+ tx_skb->data + tx_skb->len - L2CAP_FCS_SIZE);
}
l2cap_do_send(chan, tx_skb);
static int l2cap_ertm_send(struct l2cap_chan *chan)
{
struct sk_buff *skb, *tx_skb;
- u16 control, fcs;
+ u16 fcs;
+ u32 control;
int nsent = 0;
if (chan->state != BT_CONNECTED)
bt_cb(skb)->retries++;
- control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE);
- control &= L2CAP_CTRL_SAR;
+ control = __get_control(chan, tx_skb->data + L2CAP_HDR_SIZE);
+ control &= __get_sar_mask(chan);
if (test_and_clear_bit(CONN_SEND_FBIT, &chan->conn_state))
- control |= L2CAP_CTRL_FINAL;
+ control |= __set_ctrl_final(chan);
- control |= (chan->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT)
- | (chan->next_tx_seq << L2CAP_CTRL_TXSEQ_SHIFT);
- put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE);
+ control |= __set_reqseq(chan, chan->buffer_seq);
+ control |= __set_txseq(chan, chan->next_tx_seq);
+ __put_control(chan, control, tx_skb->data + L2CAP_HDR_SIZE);
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);
+ fcs = crc16(0, (u8 *)skb->data,
+ tx_skb->len - L2CAP_FCS_SIZE);
+ put_unaligned_le16(fcs, skb->data +
+ tx_skb->len - L2CAP_FCS_SIZE);
}
l2cap_do_send(chan, tx_skb);
__set_retrans_timer(chan);
bt_cb(skb)->tx_seq = chan->next_tx_seq;
- chan->next_tx_seq = (chan->next_tx_seq + 1) % 64;
+
+ chan->next_tx_seq = __next_seq(chan, chan->next_tx_seq);
if (bt_cb(skb)->retries == 1)
chan->unacked_frames++;
static void l2cap_send_ack(struct l2cap_chan *chan)
{
- u16 control = 0;
+ u32 control = 0;
- control |= chan->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
+ control |= __set_reqseq(chan, chan->buffer_seq);
if (test_bit(CONN_LOCAL_BUSY, &chan->conn_state)) {
control |= __set_ctrl_super(chan, L2CAP_SUPER_RNR);
static void l2cap_send_srejtail(struct l2cap_chan *chan)
{
struct srej_list *tail;
- u16 control;
+ u32 control;
control = __set_ctrl_super(chan, L2CAP_SUPER_SREJ);
- control |= L2CAP_CTRL_FINAL;
+ control |= __set_ctrl_final(chan);
tail = list_entry((&chan->srej_l)->prev, struct srej_list, list);
- control |= tail->tx_seq << L2CAP_CTRL_REQSEQ_SHIFT;
+ control |= __set_reqseq(chan, tail->tx_seq);
l2cap_send_sframe(chan, control);
}
if (memcpy_fromiovec(skb_put(*frag, count), msg->msg_iov, count))
return -EFAULT;
+ (*frag)->priority = skb->priority;
+
sent += count;
len -= count;
return sent;
}
-static struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
+static struct sk_buff *l2cap_create_connless_pdu(struct l2cap_chan *chan,
+ struct msghdr *msg, size_t len,
+ u32 priority)
{
struct sock *sk = chan->sk;
struct l2cap_conn *conn = chan->conn;
struct sk_buff *skb;
- int err, count, hlen = L2CAP_HDR_SIZE + 2;
+ int err, count, hlen = L2CAP_HDR_SIZE + L2CAP_PSMLEN_SIZE;
struct l2cap_hdr *lh;
- BT_DBG("sk %p len %d", sk, (int)len);
+ BT_DBG("sk %p len %d priority %u", sk, (int)len, priority);
count = min_t(unsigned int, (conn->mtu - hlen), len);
skb = bt_skb_send_alloc(sk, count + hlen,
if (!skb)
return ERR_PTR(err);
+ skb->priority = priority;
+
/* Create L2CAP header */
lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
lh->cid = cpu_to_le16(chan->dcid);
return skb;
}
-static struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
+static struct sk_buff *l2cap_create_basic_pdu(struct l2cap_chan *chan,
+ struct msghdr *msg, size_t len,
+ u32 priority)
{
struct sock *sk = chan->sk;
struct l2cap_conn *conn = chan->conn;
if (!skb)
return ERR_PTR(err);
+ skb->priority = priority;
+
/* Create L2CAP header */
lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
lh->cid = cpu_to_le16(chan->dcid);
static struct sk_buff *l2cap_create_iframe_pdu(struct l2cap_chan *chan,
struct msghdr *msg, size_t len,
- u16 control, u16 sdulen)
+ u32 control, u16 sdulen)
{
struct sock *sk = chan->sk;
struct l2cap_conn *conn = chan->conn;
struct sk_buff *skb;
- int err, count, hlen = L2CAP_HDR_SIZE + 2;
+ int err, count, hlen;
struct l2cap_hdr *lh;
BT_DBG("sk %p len %d", sk, (int)len);
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;
+
if (sdulen)
- hlen += 2;
+ hlen += L2CAP_SDULEN_SIZE;
if (chan->fcs == L2CAP_FCS_CRC16)
- hlen += 2;
+ hlen += L2CAP_FCS_SIZE;
count = min_t(unsigned int, (conn->mtu - hlen), len);
skb = bt_skb_send_alloc(sk, count + hlen,
lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
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));
+
+ __put_control(chan, control, skb_put(skb, __ctrl_size(chan)));
+
if (sdulen)
- put_unaligned_le16(sdulen, skb_put(skb, 2));
+ put_unaligned_le16(sdulen, skb_put(skb, L2CAP_SDULEN_SIZE));
err = l2cap_skbuff_fromiovec(sk, msg, len, count, skb);
if (unlikely(err < 0)) {
}
if (chan->fcs == L2CAP_FCS_CRC16)
- put_unaligned_le16(0, skb_put(skb, 2));
+ put_unaligned_le16(0, skb_put(skb, L2CAP_FCS_SIZE));
bt_cb(skb)->retries = 0;
return skb;
{
struct sk_buff *skb;
struct sk_buff_head sar_queue;
- u16 control;
+ u32 control;
size_t size = 0;
skb_queue_head_init(&sar_queue);
- control = L2CAP_SDU_START;
+ control = __set_ctrl_sar(chan, L2CAP_SAR_START);
skb = l2cap_create_iframe_pdu(chan, msg, chan->remote_mps, control, len);
if (IS_ERR(skb))
return PTR_ERR(skb);
size_t buflen;
if (len > chan->remote_mps) {
- control = L2CAP_SDU_CONTINUE;
+ control = __set_ctrl_sar(chan, L2CAP_SAR_CONTINUE);
buflen = chan->remote_mps;
} else {
- control = L2CAP_SDU_END;
+ control = __set_ctrl_sar(chan, L2CAP_SAR_END);
buflen = len;
}
return size;
}
-int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len)
+int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
+ u32 priority)
{
struct sk_buff *skb;
- u16 control;
+ u32 control;
int err;
/* Connectionless channel */
if (chan->chan_type == L2CAP_CHAN_CONN_LESS) {
- skb = l2cap_create_connless_pdu(chan, msg, len);
+ skb = l2cap_create_connless_pdu(chan, msg, len, priority);
if (IS_ERR(skb))
return PTR_ERR(skb);
return -EMSGSIZE;
/* Create a basic PDU */
- skb = l2cap_create_basic_pdu(chan, msg, len);
+ skb = l2cap_create_basic_pdu(chan, msg, len, priority);
if (IS_ERR(skb))
return PTR_ERR(skb);
case L2CAP_MODE_STREAMING:
/* Entire SDU fits into one PDU */
if (len <= chan->remote_mps) {
- control = L2CAP_SDU_UNSEGMENTED;
+ control = __set_ctrl_sar(chan, L2CAP_SAR_UNSEGMENTED);
skb = l2cap_create_iframe_pdu(chan, msg, len, control,
0);
if (IS_ERR(skb))
*ptr += L2CAP_CONF_OPT_SIZE + len;
}
+static void l2cap_add_opt_efs(void **ptr, struct l2cap_chan *chan)
+{
+ struct l2cap_conf_efs efs;
+
+ switch(chan->mode) {
+ case L2CAP_MODE_ERTM:
+ efs.id = chan->local_id;
+ 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);
+ break;
+
+ case L2CAP_MODE_STREAMING:
+ efs.id = 1;
+ efs.stype = L2CAP_SERV_BESTEFFORT;
+ efs.msdu = cpu_to_le16(chan->local_msdu);
+ efs.sdu_itime = cpu_to_le32(chan->local_sdu_itime);
+ efs.acc_lat = 0;
+ efs.flush_to = 0;
+ break;
+
+ default:
+ return;
+ }
+
+ l2cap_add_conf_opt(ptr, L2CAP_CONF_EFS, sizeof(efs),
+ (unsigned long) &efs);
+}
+
static void l2cap_ack_timeout(unsigned long arg)
{
struct l2cap_chan *chan = (void *) arg;
return enable_hs && chan->conn->feat_mask & L2CAP_FEAT_EXT_WINDOW;
}
+static inline bool __l2cap_efs_supported(struct l2cap_chan *chan)
+{
+ return enable_hs && chan->conn->feat_mask & L2CAP_FEAT_EXT_FLOW;
+}
+
static inline void l2cap_txwin_setup(struct l2cap_chan *chan)
{
if (chan->tx_win > L2CAP_DEFAULT_TX_WINDOW &&
- __l2cap_ews_supported(chan))
+ __l2cap_ews_supported(chan)) {
/* use extended control field */
set_bit(FLAG_EXT_CTRL, &chan->flags);
- else
+ chan->tx_win_max = L2CAP_DEFAULT_EXT_WINDOW;
+ } else {
chan->tx_win = min_t(u16, chan->tx_win,
L2CAP_DEFAULT_TX_WINDOW);
+ chan->tx_win_max = L2CAP_DEFAULT_TX_WINDOW;
+ }
}
static int l2cap_build_conf_req(struct l2cap_chan *chan, void *data)
struct l2cap_conf_req *req = data;
struct l2cap_conf_rfc rfc = { .mode = chan->mode };
void *ptr = req->data;
+ u16 size;
BT_DBG("chan %p", chan);
if (test_bit(CONF_STATE2_DEVICE, &chan->conf_state))
break;
+ if (__l2cap_efs_supported(chan))
+ set_bit(FLAG_EFS_ENABLE, &chan->flags);
+
/* fall through */
default:
chan->mode = l2cap_select_mode(rfc.mode, chan->conn->feat_mask);
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 (L2CAP_DEFAULT_MAX_PDU_SIZE > chan->conn->mtu - 10)
- rfc.max_pdu_size = cpu_to_le16(chan->conn->mtu - 10);
+
+ size = min_t(u16, L2CAP_DEFAULT_MAX_PDU_SIZE, chan->conn->mtu -
+ L2CAP_EXT_HDR_SIZE -
+ L2CAP_SDULEN_SIZE -
+ L2CAP_FCS_SIZE);
+ rfc.max_pdu_size = cpu_to_le16(size);
l2cap_txwin_setup(chan);
l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
(unsigned long) &rfc);
+ if (test_bit(FLAG_EFS_ENABLE, &chan->flags))
+ l2cap_add_opt_efs(&ptr, chan);
+
if (!(chan->conn->feat_mask & L2CAP_FEAT_FCS))
break;
rfc.max_transmit = 0;
rfc.retrans_timeout = 0;
rfc.monitor_timeout = 0;
- rfc.max_pdu_size = cpu_to_le16(L2CAP_DEFAULT_MAX_PDU_SIZE);
- if (L2CAP_DEFAULT_MAX_PDU_SIZE > chan->conn->mtu - 10)
- rfc.max_pdu_size = cpu_to_le16(chan->conn->mtu - 10);
+
+ size = min_t(u16, L2CAP_DEFAULT_MAX_PDU_SIZE, chan->conn->mtu -
+ L2CAP_EXT_HDR_SIZE -
+ L2CAP_SDULEN_SIZE -
+ L2CAP_FCS_SIZE);
+ rfc.max_pdu_size = cpu_to_le16(size);
l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
(unsigned long) &rfc);
+ if (test_bit(FLAG_EFS_ENABLE, &chan->flags))
+ l2cap_add_opt_efs(&ptr, chan);
+
if (!(chan->conn->feat_mask & L2CAP_FEAT_FCS))
break;
int type, hint, olen;
unsigned long val;
struct l2cap_conf_rfc rfc = { .mode = L2CAP_MODE_BASIC };
+ struct l2cap_conf_efs efs;
+ u8 remote_efs = 0;
u16 mtu = L2CAP_DEFAULT_MTU;
u16 result = L2CAP_CONF_SUCCESS;
+ u16 size;
BT_DBG("chan %p", chan);
case L2CAP_CONF_FCS:
if (val == L2CAP_FCS_NONE)
set_bit(CONF_NO_FCS_RECV, &chan->conf_state);
+ break;
+ case L2CAP_CONF_EFS:
+ remote_efs = 1;
+ if (olen == sizeof(efs))
+ memcpy(&efs, (void *) val, olen);
break;
case L2CAP_CONF_EWS:
set_bit(FLAG_EXT_CTRL, &chan->flags);
set_bit(CONF_EWS_RECV, &chan->conf_state);
+ chan->tx_win_max = L2CAP_DEFAULT_EXT_WINDOW;
chan->remote_tx_win = val;
break;
break;
}
+ if (remote_efs) {
+ if (__l2cap_efs_supported(chan))
+ set_bit(FLAG_EFS_ENABLE, &chan->flags);
+ else
+ return -ECONNREFUSED;
+ }
+
if (chan->mode != rfc.mode)
return -ECONNREFUSED;
sizeof(rfc), (unsigned long) &rfc);
}
-
if (result == L2CAP_CONF_SUCCESS) {
/* Configure output options and let the other side know
* which ones we don't like. */
}
l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, chan->omtu);
+ if (remote_efs) {
+ if (chan->local_stype != L2CAP_SERV_NOTRAFIC &&
+ efs.stype != L2CAP_SERV_NOTRAFIC &&
+ efs.stype != chan->local_stype) {
+
+ result = L2CAP_CONF_UNACCEPT;
+
+ if (chan->num_conf_req >= 1)
+ return -ECONNREFUSED;
+
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS,
+ sizeof(efs),
+ (unsigned long) &efs);
+ } else {
+ /* Send PENDING Conf Rsp */
+ result = L2CAP_CONF_PENDING;
+ set_bit(CONF_LOC_CONF_PEND, &chan->conf_state);
+ }
+ }
+
switch (rfc.mode) {
case L2CAP_MODE_BASIC:
chan->fcs = L2CAP_FCS_NONE;
chan->remote_max_tx = rfc.max_transmit;
- if (le16_to_cpu(rfc.max_pdu_size) > chan->conn->mtu - 10)
- rfc.max_pdu_size = cpu_to_le16(chan->conn->mtu - 10);
-
- chan->remote_mps = le16_to_cpu(rfc.max_pdu_size);
+ size = min_t(u16, le16_to_cpu(rfc.max_pdu_size),
+ chan->conn->mtu -
+ L2CAP_EXT_HDR_SIZE -
+ L2CAP_SDULEN_SIZE -
+ L2CAP_FCS_SIZE);
+ rfc.max_pdu_size = cpu_to_le16(size);
+ chan->remote_mps = size;
rfc.retrans_timeout =
le16_to_cpu(L2CAP_DEFAULT_RETRANS_TO);
l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
sizeof(rfc), (unsigned long) &rfc);
+ if (test_bit(FLAG_EFS_ENABLE, &chan->flags)) {
+ chan->remote_id = efs.id;
+ chan->remote_stype = efs.stype;
+ chan->remote_msdu = le16_to_cpu(efs.msdu);
+ chan->remote_flush_to =
+ le32_to_cpu(efs.flush_to);
+ chan->remote_acc_lat =
+ le32_to_cpu(efs.acc_lat);
+ chan->remote_sdu_itime =
+ le32_to_cpu(efs.sdu_itime);
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS,
+ sizeof(efs), (unsigned long) &efs);
+ }
break;
case L2CAP_MODE_STREAMING:
- if (le16_to_cpu(rfc.max_pdu_size) > chan->conn->mtu - 10)
- rfc.max_pdu_size = cpu_to_le16(chan->conn->mtu - 10);
-
- chan->remote_mps = le16_to_cpu(rfc.max_pdu_size);
+ size = min_t(u16, le16_to_cpu(rfc.max_pdu_size),
+ chan->conn->mtu -
+ L2CAP_EXT_HDR_SIZE -
+ L2CAP_SDULEN_SIZE -
+ L2CAP_FCS_SIZE);
+ rfc.max_pdu_size = cpu_to_le16(size);
+ chan->remote_mps = size;
set_bit(CONF_MODE_DONE, &chan->conf_state);
case L2CAP_CONF_EWS:
chan->tx_win = min_t(u16, val,
L2CAP_DEFAULT_EXT_WINDOW);
- l2cap_add_conf_opt(&ptr, L2CAP_CONF_EWS,
- 2, chan->tx_win);
+ l2cap_add_conf_opt(&ptr, L2CAP_CONF_EWS, 2,
+ chan->tx_win);
break;
}
}
chan->mode = rfc.mode;
- if (*result == L2CAP_CONF_SUCCESS) {
+ if (*result == L2CAP_CONF_SUCCESS || *result == L2CAP_CONF_PENDING) {
switch (rfc.mode) {
case L2CAP_MODE_ERTM:
chan->retrans_timeout = le16_to_cpu(rfc.retrans_timeout);
chan->num_conf_req++;
}
+ /* Got Conf Rsp PENDING from remote side and asume we sent
+ Conf Rsp PENDING in the code above */
+ if (test_bit(CONF_REM_CONF_PEND, &chan->conf_state) &&
+ test_bit(CONF_LOC_CONF_PEND, &chan->conf_state)) {
+
+ /* check compatibility */
+
+ clear_bit(CONF_LOC_CONF_PEND, &chan->conf_state);
+ set_bit(CONF_OUTPUT_DONE, &chan->conf_state);
+
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP,
+ l2cap_build_conf_rsp(chan, rsp,
+ L2CAP_CONF_SUCCESS, 0x0000), rsp);
+ }
+
unlock:
bh_unlock_sock(sk);
return 0;
switch (result) {
case L2CAP_CONF_SUCCESS:
l2cap_conf_rfc_get(chan, rsp->data, len);
+ clear_bit(CONF_REM_CONF_PEND, &chan->conf_state);
break;
+ case L2CAP_CONF_PENDING:
+ set_bit(CONF_REM_CONF_PEND, &chan->conf_state);
+
+ if (test_bit(CONF_LOC_CONF_PEND, &chan->conf_state)) {
+ char buf[64];
+
+ len = l2cap_parse_conf_rsp(chan, rsp->data, len,
+ buf, &result);
+ if (len < 0) {
+ l2cap_send_disconn_req(conn, chan, ECONNRESET);
+ goto done;
+ }
+
+ /* check compatibility */
+
+ clear_bit(CONF_LOC_CONF_PEND, &chan->conf_state);
+ set_bit(CONF_OUTPUT_DONE, &chan->conf_state);
+
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_CONF_RSP,
+ l2cap_build_conf_rsp(chan, buf,
+ L2CAP_CONF_SUCCESS, 0x0000), buf);
+ }
+ goto done;
+
case L2CAP_CONF_UNACCEPT:
if (chan->num_conf_rsp <= L2CAP_CONF_MAX_CONF_RSP) {
char req[64];
struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) buf;
rsp->type = cpu_to_le16(L2CAP_IT_FIXED_CHAN);
rsp->result = cpu_to_le16(L2CAP_IR_SUCCESS);
- memcpy(buf + 4, l2cap_fixed_chan, 8);
+ memcpy(rsp->data, l2cap_fixed_chan, sizeof(l2cap_fixed_chan));
l2cap_send_cmd(conn, cmd->ident,
L2CAP_INFO_RSP, sizeof(buf), buf);
} else {
return 0;
}
+static inline int l2cap_create_channel_req(struct l2cap_conn *conn,
+ struct l2cap_cmd_hdr *cmd, u16 cmd_len,
+ void *data)
+{
+ struct l2cap_create_chan_req *req = data;
+ struct l2cap_create_chan_rsp rsp;
+ u16 psm, scid;
+
+ if (cmd_len != sizeof(*req))
+ return -EPROTO;
+
+ if (!enable_hs)
+ return -EINVAL;
+
+ psm = le16_to_cpu(req->psm);
+ scid = le16_to_cpu(req->scid);
+
+ BT_DBG("psm %d, scid %d, amp_id %d", psm, scid, req->amp_id);
+
+ /* Placeholder: Always reject */
+ rsp.dcid = 0;
+ rsp.scid = cpu_to_le16(scid);
+ rsp.result = L2CAP_CR_NO_MEM;
+ rsp.status = L2CAP_CS_NO_INFO;
+
+ l2cap_send_cmd(conn, cmd->ident, L2CAP_CREATE_CHAN_RSP,
+ sizeof(rsp), &rsp);
+
+ return 0;
+}
+
+static inline int l2cap_create_channel_rsp(struct l2cap_conn *conn,
+ struct l2cap_cmd_hdr *cmd, void *data)
+{
+ BT_DBG("conn %p", conn);
+
+ return l2cap_connect_rsp(conn, cmd, data);
+}
+
static inline int l2cap_check_conn_param(u16 min, u16 max, u16 latency,
u16 to_multiplier)
{
err = l2cap_information_rsp(conn, cmd, data);
break;
+ case L2CAP_CREATE_CHAN_REQ:
+ err = l2cap_create_channel_req(conn, cmd, cmd_len, data);
+ break;
+
+ case L2CAP_CREATE_CHAN_RSP:
+ err = l2cap_create_channel_rsp(conn, cmd, data);
+ break;
+
default:
BT_ERR("Unknown BR/EDR signaling command 0x%2.2x", cmd->code);
err = -EINVAL;
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;
+ int hdr_size;
+
+ if (test_bit(FLAG_EXT_CTRL, &chan->flags))
+ hdr_size = L2CAP_EXT_HDR_SIZE;
+ else
+ hdr_size = L2CAP_ENH_HDR_SIZE;
if (chan->fcs == L2CAP_FCS_CRC16) {
- skb_trim(skb, skb->len - 2);
+ skb_trim(skb, skb->len - L2CAP_FCS_SIZE);
rcv_fcs = get_unaligned_le16(skb->data + skb->len);
our_fcs = crc16(0, skb->data - hdr_size, skb->len + hdr_size);
static inline void l2cap_send_i_or_rr_or_rnr(struct l2cap_chan *chan)
{
- u16 control = 0;
+ u32 control = 0;
chan->frames_sent = 0;
- control |= chan->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
+ control |= __set_reqseq(chan, chan->buffer_seq);
if (test_bit(CONN_LOCAL_BUSY, &chan->conn_state)) {
control |= __set_ctrl_super(chan, L2CAP_SUPER_RNR);
}
}
-static int l2cap_add_to_srej_queue(struct l2cap_chan *chan, struct sk_buff *skb, u8 tx_seq, u8 sar)
+static int l2cap_add_to_srej_queue(struct l2cap_chan *chan, struct sk_buff *skb, u16 tx_seq, u8 sar)
{
struct sk_buff *next_skb;
int tx_seq_offset, next_tx_seq_offset;
return 0;
}
- tx_seq_offset = (tx_seq - chan->buffer_seq) % 64;
- if (tx_seq_offset < 0)
- tx_seq_offset += 64;
+ tx_seq_offset = __seq_offset(chan, tx_seq, chan->buffer_seq);
do {
if (bt_cb(next_skb)->tx_seq == tx_seq)
return -EINVAL;
- next_tx_seq_offset = (bt_cb(next_skb)->tx_seq -
- chan->buffer_seq) % 64;
- if (next_tx_seq_offset < 0)
- next_tx_seq_offset += 64;
+ next_tx_seq_offset = __seq_offset(chan,
+ bt_cb(next_skb)->tx_seq, chan->buffer_seq);
if (next_tx_seq_offset > tx_seq_offset) {
__skb_queue_before(&chan->srej_q, next_skb, skb);
skb->truesize += new_frag->truesize;
}
-static int l2cap_reassemble_sdu(struct l2cap_chan *chan, struct sk_buff *skb, u16 control)
+static int l2cap_reassemble_sdu(struct l2cap_chan *chan, struct sk_buff *skb, u32 control)
{
int err = -EINVAL;
- switch (control & L2CAP_CTRL_SAR) {
- case L2CAP_SDU_UNSEGMENTED:
+ switch (__get_ctrl_sar(chan, control)) {
+ case L2CAP_SAR_UNSEGMENTED:
if (chan->sdu)
break;
err = chan->ops->recv(chan->data, skb);
break;
- case L2CAP_SDU_START:
+ case L2CAP_SAR_START:
if (chan->sdu)
break;
chan->sdu_len = get_unaligned_le16(skb->data);
- skb_pull(skb, 2);
+ skb_pull(skb, L2CAP_SDULEN_SIZE);
if (chan->sdu_len > chan->imtu) {
err = -EMSGSIZE;
err = 0;
break;
- case L2CAP_SDU_CONTINUE:
+ case L2CAP_SAR_CONTINUE:
if (!chan->sdu)
break;
err = 0;
break;
- case L2CAP_SDU_END:
+ case L2CAP_SAR_END:
if (!chan->sdu)
break;
static void l2cap_ertm_enter_local_busy(struct l2cap_chan *chan)
{
- u16 control;
+ u32 control;
BT_DBG("chan %p, Enter local busy", chan);
set_bit(CONN_LOCAL_BUSY, &chan->conn_state);
- control = chan->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
+ control = __set_reqseq(chan, chan->buffer_seq);
control |= __set_ctrl_super(chan, L2CAP_SUPER_RNR);
l2cap_send_sframe(chan, control);
static void l2cap_ertm_exit_local_busy(struct l2cap_chan *chan)
{
- u16 control;
+ u32 control;
if (!test_bit(CONN_RNR_SENT, &chan->conn_state))
goto done;
- control = chan->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
- control |= L2CAP_CTRL_POLL;
+ control = __set_reqseq(chan, chan->buffer_seq);
+ control |= __set_ctrl_poll(chan);
control |= __set_ctrl_super(chan, L2CAP_SUPER_RR);
l2cap_send_sframe(chan, control);
chan->retry_count = 1;
}
}
-static void l2cap_check_srej_gap(struct l2cap_chan *chan, u8 tx_seq)
+static void l2cap_check_srej_gap(struct l2cap_chan *chan, u16 tx_seq)
{
struct sk_buff *skb;
- u16 control;
+ u32 control;
while ((skb = skb_peek(&chan->srej_q)) &&
!test_bit(CONN_LOCAL_BUSY, &chan->conn_state)) {
break;
skb = skb_dequeue(&chan->srej_q);
- control = bt_cb(skb)->sar << L2CAP_CTRL_SAR_SHIFT;
+ control = __set_ctrl_sar(chan, bt_cb(skb)->sar);
err = l2cap_reassemble_sdu(chan, skb, control);
if (err < 0) {
break;
}
- chan->buffer_seq_srej =
- (chan->buffer_seq_srej + 1) % 64;
- tx_seq = (tx_seq + 1) % 64;
+ chan->buffer_seq_srej = __next_seq(chan, chan->buffer_seq_srej);
+ tx_seq = __next_seq(chan, tx_seq);
}
}
-static void l2cap_resend_srejframe(struct l2cap_chan *chan, u8 tx_seq)
+static void l2cap_resend_srejframe(struct l2cap_chan *chan, u16 tx_seq)
{
struct srej_list *l, *tmp;
- u16 control;
+ u32 control;
list_for_each_entry_safe(l, tmp, &chan->srej_l, list) {
if (l->tx_seq == tx_seq) {
return;
}
control = __set_ctrl_super(chan, L2CAP_SUPER_SREJ);
- control |= l->tx_seq << L2CAP_CTRL_REQSEQ_SHIFT;
+ control |= __set_reqseq(chan, l->tx_seq);
l2cap_send_sframe(chan, control);
list_del(&l->list);
list_add_tail(&l->list, &chan->srej_l);
}
}
-static void l2cap_send_srejframe(struct l2cap_chan *chan, u8 tx_seq)
+static void l2cap_send_srejframe(struct l2cap_chan *chan, u16 tx_seq)
{
struct srej_list *new;
- u16 control;
+ u32 control;
while (tx_seq != chan->expected_tx_seq) {
control = __set_ctrl_super(chan, L2CAP_SUPER_SREJ);
- control |= chan->expected_tx_seq << L2CAP_CTRL_REQSEQ_SHIFT;
+ control |= __set_reqseq(chan, chan->expected_tx_seq);
l2cap_send_sframe(chan, control);
new = kzalloc(sizeof(struct srej_list), GFP_ATOMIC);
new->tx_seq = chan->expected_tx_seq;
- chan->expected_tx_seq = (chan->expected_tx_seq + 1) % 64;
+
+ chan->expected_tx_seq = __next_seq(chan, chan->expected_tx_seq);
+
list_add_tail(&new->list, &chan->srej_l);
}
- chan->expected_tx_seq = (chan->expected_tx_seq + 1) % 64;
+
+ chan->expected_tx_seq = __next_seq(chan, chan->expected_tx_seq);
}
-static inline int l2cap_data_channel_iframe(struct l2cap_chan *chan, u16 rx_control, struct sk_buff *skb)
+static inline int l2cap_data_channel_iframe(struct l2cap_chan *chan, u32 rx_control, struct sk_buff *skb)
{
- u8 tx_seq = __get_txseq(rx_control);
- u8 req_seq = __get_reqseq(rx_control);
- u8 sar = rx_control >> L2CAP_CTRL_SAR_SHIFT;
+ u16 tx_seq = __get_txseq(chan, rx_control);
+ u16 req_seq = __get_reqseq(chan, rx_control);
+ u8 sar = __get_ctrl_sar(chan, rx_control);
int tx_seq_offset, expected_tx_seq_offset;
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,
+ BT_DBG("chan %p len %d tx_seq %d rx_control 0x%8.8x", chan, skb->len,
tx_seq, rx_control);
- if (L2CAP_CTRL_FINAL & rx_control &&
+ if (__is_ctrl_final(chan, rx_control) &&
test_bit(CONN_WAIT_F, &chan->conn_state)) {
__clear_monitor_timer(chan);
if (chan->unacked_frames > 0)
chan->expected_ack_seq = req_seq;
l2cap_drop_acked_frames(chan);
- tx_seq_offset = (tx_seq - chan->buffer_seq) % 64;
- if (tx_seq_offset < 0)
- tx_seq_offset += 64;
+ tx_seq_offset = __seq_offset(chan, tx_seq, chan->buffer_seq);
/* invalid tx_seq */
if (tx_seq_offset >= chan->tx_win) {
l2cap_send_srejframe(chan, tx_seq);
}
} else {
- expected_tx_seq_offset =
- (chan->expected_tx_seq - chan->buffer_seq) % 64;
- if (expected_tx_seq_offset < 0)
- expected_tx_seq_offset += 64;
+ expected_tx_seq_offset = __seq_offset(chan,
+ chan->expected_tx_seq, chan->buffer_seq);
/* duplicated tx_seq */
if (tx_seq_offset < expected_tx_seq_offset)
return 0;
expected:
- chan->expected_tx_seq = (chan->expected_tx_seq + 1) % 64;
+ chan->expected_tx_seq = __next_seq(chan, chan->expected_tx_seq);
if (test_bit(CONN_SREJ_SENT, &chan->conn_state)) {
bt_cb(skb)->tx_seq = tx_seq;
}
err = l2cap_reassemble_sdu(chan, skb, rx_control);
- chan->buffer_seq = (chan->buffer_seq + 1) % 64;
+ chan->buffer_seq = __next_seq(chan, chan->buffer_seq);
+
if (err < 0) {
l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);
return err;
}
- if (rx_control & L2CAP_CTRL_FINAL) {
+ if (__is_ctrl_final(chan, rx_control)) {
if (!test_and_clear_bit(CONN_REJ_ACT, &chan->conn_state))
l2cap_retransmit_frames(chan);
}
return 0;
}
-static inline void l2cap_data_channel_rrframe(struct l2cap_chan *chan, u16 rx_control)
+static inline void l2cap_data_channel_rrframe(struct l2cap_chan *chan, u32 rx_control)
{
- BT_DBG("chan %p, req_seq %d ctrl 0x%4.4x", chan, __get_reqseq(rx_control),
- rx_control);
+ BT_DBG("chan %p, req_seq %d ctrl 0x%8.8x", chan,
+ __get_reqseq(chan, rx_control), rx_control);
- chan->expected_ack_seq = __get_reqseq(rx_control);
+ chan->expected_ack_seq = __get_reqseq(chan, rx_control);
l2cap_drop_acked_frames(chan);
- if (rx_control & L2CAP_CTRL_POLL) {
+ if (__is_ctrl_poll(chan, rx_control)) {
set_bit(CONN_SEND_FBIT, &chan->conn_state);
if (test_bit(CONN_SREJ_SENT, &chan->conn_state)) {
if (test_bit(CONN_REMOTE_BUSY, &chan->conn_state) &&
l2cap_send_i_or_rr_or_rnr(chan);
}
- } else if (rx_control & L2CAP_CTRL_FINAL) {
+ } else if (__is_ctrl_final(chan, rx_control)) {
clear_bit(CONN_REMOTE_BUSY, &chan->conn_state);
if (!test_and_clear_bit(CONN_REJ_ACT, &chan->conn_state))
}
}
-static inline void l2cap_data_channel_rejframe(struct l2cap_chan *chan, u16 rx_control)
+static inline void l2cap_data_channel_rejframe(struct l2cap_chan *chan, u32 rx_control)
{
- u8 tx_seq = __get_reqseq(rx_control);
+ u16 tx_seq = __get_reqseq(chan, rx_control);
- BT_DBG("chan %p, req_seq %d ctrl 0x%4.4x", chan, tx_seq, rx_control);
+ BT_DBG("chan %p, req_seq %d ctrl 0x%8.8x", chan, tx_seq, rx_control);
clear_bit(CONN_REMOTE_BUSY, &chan->conn_state);
chan->expected_ack_seq = tx_seq;
l2cap_drop_acked_frames(chan);
- if (rx_control & L2CAP_CTRL_FINAL) {
+ if (__is_ctrl_final(chan, rx_control)) {
if (!test_and_clear_bit(CONN_REJ_ACT, &chan->conn_state))
l2cap_retransmit_frames(chan);
} else {
set_bit(CONN_REJ_ACT, &chan->conn_state);
}
}
-static inline void l2cap_data_channel_srejframe(struct l2cap_chan *chan, u16 rx_control)
+static inline void l2cap_data_channel_srejframe(struct l2cap_chan *chan, u32 rx_control)
{
- u8 tx_seq = __get_reqseq(rx_control);
+ u16 tx_seq = __get_reqseq(chan, rx_control);
- BT_DBG("chan %p, req_seq %d ctrl 0x%4.4x", chan, tx_seq, rx_control);
+ BT_DBG("chan %p, req_seq %d ctrl 0x%8.8x", chan, tx_seq, rx_control);
clear_bit(CONN_REMOTE_BUSY, &chan->conn_state);
- if (rx_control & L2CAP_CTRL_POLL) {
+ if (__is_ctrl_poll(chan, rx_control)) {
chan->expected_ack_seq = tx_seq;
l2cap_drop_acked_frames(chan);
chan->srej_save_reqseq = tx_seq;
set_bit(CONN_SREJ_ACT, &chan->conn_state);
}
- } else if (rx_control & L2CAP_CTRL_FINAL) {
+ } else if (__is_ctrl_final(chan, rx_control)) {
if (test_bit(CONN_SREJ_ACT, &chan->conn_state) &&
chan->srej_save_reqseq == tx_seq)
clear_bit(CONN_SREJ_ACT, &chan->conn_state);
}
}
-static inline void l2cap_data_channel_rnrframe(struct l2cap_chan *chan, u16 rx_control)
+static inline void l2cap_data_channel_rnrframe(struct l2cap_chan *chan, u32 rx_control)
{
- u8 tx_seq = __get_reqseq(rx_control);
+ u16 tx_seq = __get_reqseq(chan, rx_control);
- BT_DBG("chan %p, req_seq %d ctrl 0x%4.4x", chan, tx_seq, rx_control);
+ BT_DBG("chan %p, req_seq %d ctrl 0x%8.8x", chan, tx_seq, rx_control);
set_bit(CONN_REMOTE_BUSY, &chan->conn_state);
chan->expected_ack_seq = tx_seq;
l2cap_drop_acked_frames(chan);
- if (rx_control & L2CAP_CTRL_POLL)
+ if (__is_ctrl_poll(chan, rx_control))
set_bit(CONN_SEND_FBIT, &chan->conn_state);
if (!test_bit(CONN_SREJ_SENT, &chan->conn_state)) {
__clear_retrans_timer(chan);
- if (rx_control & L2CAP_CTRL_POLL)
+ if (__is_ctrl_poll(chan, rx_control))
l2cap_send_rr_or_rnr(chan, L2CAP_CTRL_FINAL);
return;
}
- if (rx_control & L2CAP_CTRL_POLL) {
+ if (__is_ctrl_poll(chan, rx_control)) {
l2cap_send_srejtail(chan);
} else {
rx_control = __set_ctrl_super(chan, L2CAP_SUPER_RR);
}
}
-static inline int l2cap_data_channel_sframe(struct l2cap_chan *chan, u16 rx_control, struct sk_buff *skb)
+static inline int l2cap_data_channel_sframe(struct l2cap_chan *chan, u32 rx_control, struct sk_buff *skb)
{
- BT_DBG("chan %p rx_control 0x%4.4x len %d", chan, rx_control, skb->len);
+ BT_DBG("chan %p rx_control 0x%8.8x len %d", chan, rx_control, skb->len);
- if (L2CAP_CTRL_FINAL & rx_control &&
+ if (__is_ctrl_final(chan, rx_control) &&
test_bit(CONN_WAIT_F, &chan->conn_state)) {
__clear_monitor_timer(chan);
if (chan->unacked_frames > 0)
static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb)
{
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
- u16 control;
- u8 req_seq;
+ u32 control;
+ u16 req_seq;
int len, next_tx_seq_offset, req_seq_offset;
- control = get_unaligned_le16(skb->data);
- skb_pull(skb, 2);
+ control = __get_control(chan, skb->data);
+ skb_pull(skb, __ctrl_size(chan));
len = skb->len;
/*
if (l2cap_check_fcs(chan, skb))
goto drop;
- if (__is_sar_start(control) && __is_iframe(control))
- len -= 2;
+ if (__is_sar_start(chan, control) && !__is_sframe(chan, control))
+ len -= L2CAP_SDULEN_SIZE;
if (chan->fcs == L2CAP_FCS_CRC16)
- len -= 2;
+ len -= L2CAP_FCS_SIZE;
if (len > chan->mps) {
l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);
goto drop;
}
- req_seq = __get_reqseq(control);
- req_seq_offset = (req_seq - chan->expected_ack_seq) % 64;
- if (req_seq_offset < 0)
- req_seq_offset += 64;
+ req_seq = __get_reqseq(chan, control);
- next_tx_seq_offset =
- (chan->next_tx_seq - chan->expected_ack_seq) % 64;
- if (next_tx_seq_offset < 0)
- next_tx_seq_offset += 64;
+ req_seq_offset = __seq_offset(chan, req_seq, chan->expected_ack_seq);
+
+ next_tx_seq_offset = __seq_offset(chan, chan->next_tx_seq,
+ chan->expected_ack_seq);
/* check for invalid req-seq */
if (req_seq_offset > next_tx_seq_offset) {
goto drop;
}
- if (__is_iframe(control)) {
+ if (!__is_sframe(chan, control)) {
if (len < 0) {
l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);
goto drop;
{
struct l2cap_chan *chan;
struct sock *sk = NULL;
- u16 control;
- u8 tx_seq;
+ u32 control;
+ u16 tx_seq;
int len;
chan = l2cap_get_chan_by_scid(conn, cid);
goto done;
case L2CAP_MODE_STREAMING:
- control = get_unaligned_le16(skb->data);
- skb_pull(skb, 2);
+ control = __get_control(chan, skb->data);
+ skb_pull(skb, __ctrl_size(chan));
len = skb->len;
if (l2cap_check_fcs(chan, skb))
goto drop;
- if (__is_sar_start(control))
- len -= 2;
+ if (__is_sar_start(chan, control))
+ len -= L2CAP_SDULEN_SIZE;
if (chan->fcs == L2CAP_FCS_CRC16)
- len -= 2;
+ len -= L2CAP_FCS_SIZE;
- if (len > chan->mps || len < 0 || __is_sframe(control))
+ if (len > chan->mps || len < 0 || __is_sframe(chan, control))
goto drop;
- tx_seq = __get_txseq(control);
+ tx_seq = __get_txseq(chan, control);
if (chan->expected_tx_seq != tx_seq) {
/* Frame(s) missing - must discard partial SDU */
/* TODO: Notify userland of missing data */
}
- chan->expected_tx_seq = (tx_seq + 1) % 64;
+ chan->expected_tx_seq = __next_seq(chan, tx_seq);
if (l2cap_reassemble_sdu(chan, skb, control) == -EMSGSIZE)
l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);
projects / firefly-linux-kernel-4.4.55.git / blobdiff