diff options
| author | Andrei Emeltchenko | 2011-10-11 12:37:52 +0200 |
|---|---|---|
| committer | Gustavo F. Padovan | 2011-10-13 21:50:14 +0200 |
| commit | e4ca6d9854dc252e294007fc91249ce34d9a82e8 (patch) | |
| tree | 7fb26dbe1312aab0c38811ef695482f033d5995f /net/bluetooth/l2cap_core.c | |
| parent | Bluetooth: EWS: rewrite handling POLL (P) bit (diff) | |
| download | kernel-qcow2-linux-e4ca6d9854dc252e294007fc91249ce34d9a82e8.tar.gz kernel-qcow2-linux-e4ca6d9854dc252e294007fc91249ce34d9a82e8.tar.xz kernel-qcow2-linux-e4ca6d9854dc252e294007fc91249ce34d9a82e8.zip | |
Bluetooth: EWS: recalculate L2CAP header size
Recalculate length of L2CAP header based on Control field length.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Diffstat (limited to 'net/bluetooth/l2cap_core.c')
| -rw-r--r-- | net/bluetooth/l2cap_core.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 97aa545d66d9..439e7150f150 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -566,12 +566,17 @@ static inline void l2cap_send_sframe(struct l2cap_chan *chan, u16 control) struct sk_buff *skb; struct l2cap_hdr *lh; struct l2cap_conn *conn = chan->conn; - int count, hlen = L2CAP_HDR_SIZE + 2; + int count, hlen; u8 flags; 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; @@ -1534,7 +1539,7 @@ static struct sk_buff *l2cap_create_iframe_pdu(struct l2cap_chan *chan, 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); @@ -1542,6 +1547,11 @@ static struct sk_buff *l2cap_create_iframe_pdu(struct l2cap_chan *chan, 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; @@ -3098,7 +3108,12 @@ static inline void l2cap_sig_channel(struct l2cap_conn *conn, 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); |