Bluetooth: EFS: parse L2CAP config response

Add parsing Extended Flow Specification in L2CAP Config Response.
Based upon haijun.liu <haijun.liu@atheros.com> series of patches
(sent Sun, 22 Aug 2010)

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

1 files changed, 24 insertions, 0 deletions

diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index a50610b8a00c..f8506849b67e 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -2351,6 +2351,7 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len, voi
         int type, olen;
         unsigned long val;
         struct l2cap_conf_rfc rfc;
+        struct l2cap_conf_efs efs;
 
         BT_DBG("chan %p, rsp %p, len %d, req %p", chan, rsp, len, data);
 
@@ -2393,6 +2394,19 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len, voi
                         l2cap_add_conf_opt(&ptr, L2CAP_CONF_EWS, 2,
                                                         chan->tx_win);
                         break;
+
+                case L2CAP_CONF_EFS:
+                        if (olen == sizeof(efs))
+                                memcpy(&efs, (void *)val, olen);
+
+                        if (chan->local_stype != L2CAP_SERV_NOTRAFIC &&
+                                        efs.stype != L2CAP_SERV_NOTRAFIC &&
+                                        efs.stype != chan->local_stype)
+                                return -ECONNREFUSED;
+
+                        l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS,
+                                        sizeof(efs), (unsigned long) &efs);
+                        break;
                 }
         }
 
@@ -2407,7 +2421,17 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len, voi
                         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);
+
+                        if (test_bit(FLAG_EFS_ENABLE, &chan->flags)) {
+                                chan->local_msdu = le16_to_cpu(efs.msdu);
+                                chan->local_sdu_itime =
+                                                le32_to_cpu(efs.sdu_itime);
+                                chan->local_acc_lat = le32_to_cpu(efs.acc_lat);
+                                chan->local_flush_to =
+                                                le32_to_cpu(efs.flush_to);
+                        }
                         break;
+
                 case L2CAP_MODE_STREAMING:
                         chan->mps    = le16_to_cpu(rfc.max_pdu_size);
                 }