Instead of using the default MTU, use one passed
in by the user, and detect it from the channel when
it is created.
---
attrib/gattrib.c | 9 +++------
attrib/gattrib.h | 2 +-
attrib/gatttool.c | 17 ++++++++++++++++-
attrib/interactive.c | 17 ++++++++++++++++-
src/device.c | 11 ++++++++++-
5 files changed, 46 insertions(+), 10 deletions(-)
diff --git a/attrib/gattrib.c b/attrib/gattrib.c
index ba2f6cc..a6511a2 100644
--- a/attrib/gattrib.c
+++ b/attrib/gattrib.c
@@ -473,10 +473,9 @@ done:
return TRUE;
}
-GAttrib *g_attrib_new(GIOChannel *io)
+GAttrib *g_attrib_new(GIOChannel *io, guint16 mtu)
{
struct _GAttrib *attrib;
- uint16_t att_mtu;
g_io_channel_set_encoding(io, NULL, NULL);
g_io_channel_set_buffered(io, FALSE);
@@ -485,10 +484,8 @@ GAttrib *g_attrib_new(GIOChannel *io)
if (attrib == NULL)
return NULL;
- att_mtu = ATT_DEFAULT_LE_MTU;
-
- attrib->buf = g_malloc0(att_mtu);
- attrib->buflen = att_mtu;
+ attrib->buf = g_malloc0(mtu);
+ attrib->buflen = mtu;
attrib->io = g_io_channel_ref(io);
attrib->requests = g_queue_new();
diff --git a/attrib/gattrib.h b/attrib/gattrib.h
index 18df2ad..99b8b37 100644
--- a/attrib/gattrib.h
+++ b/attrib/gattrib.h
@@ -42,7 +42,7 @@ typedef void (*GAttribDebugFunc)(const char *str, gpointer user_data);
typedef void (*GAttribNotifyFunc)(const guint8 *pdu, guint16 len,
gpointer user_data);
-GAttrib *g_attrib_new(GIOChannel *io);
+GAttrib *g_attrib_new(GIOChannel *io, guint16 mtu);
GAttrib *g_attrib_ref(GAttrib *attrib);
void g_attrib_unref(GAttrib *attrib);
diff --git a/attrib/gatttool.c b/attrib/gatttool.c
index db5da62..8f92d62 100644
--- a/attrib/gatttool.c
+++ b/attrib/gatttool.c
@@ -123,6 +123,9 @@ static gboolean listen_start(gpointer user_data)
static void connect_cb(GIOChannel *io, GError *err, gpointer user_data)
{
GAttrib *attrib;
+ uint16_t mtu;
+ uint16_t cid;
+ GError *gerr = NULL;
if (err) {
g_printerr("%s\n", err->message);
@@ -130,7 +133,19 @@ static void connect_cb(GIOChannel *io, GError *err, gpointer user_data)
g_main_loop_quit(event_loop);
}
- attrib = g_attrib_new(io);
+ bt_io_get(io, &gerr, BT_IO_OPT_IMTU, &mtu,
+ BT_IO_OPT_CID, &cid, BT_IO_OPT_INVALID);
+
+ if (gerr) {
+ g_printerr("Can't detect MTU, using default: %s", gerr->message);
+ g_error_free(gerr);
+ mtu = ATT_DEFAULT_LE_MTU;
+ }
+
+ if (cid == ATT_CID)
+ mtu = ATT_DEFAULT_LE_MTU;
+
+ attrib = g_attrib_new(io, mtu);
if (opt_listen)
g_idle_add(listen_start, attrib);
diff --git a/attrib/interactive.c b/attrib/interactive.c
index 08f39f7..7911ba5 100644
--- a/attrib/interactive.c
+++ b/attrib/interactive.c
@@ -150,13 +150,28 @@ static void events_handler(const uint8_t *pdu, uint16_t len, gpointer user_data)
static void connect_cb(GIOChannel *io, GError *err, gpointer user_data)
{
+ uint16_t mtu;
+ uint16_t cid;
+
if (err) {
set_state(STATE_DISCONNECTED);
error("%s\n", err->message);
return;
}
- attrib = g_attrib_new(iochannel);
+ bt_io_get(io, &err, BT_IO_OPT_IMTU, &mtu,
+ BT_IO_OPT_CID, &cid, BT_IO_OPT_INVALID);
+
+ if (err) {
+ g_printerr("Can't detect MTU, using default: %s", err->message);
+ g_error_free(err);
+ mtu = ATT_DEFAULT_LE_MTU;
+ }
+
+ if (cid == ATT_CID)
+ mtu = ATT_DEFAULT_LE_MTU;
+
+ attrib = g_attrib_new(iochannel, mtu);
g_attrib_register(attrib, ATT_OP_HANDLE_NOTIFY, GATTRIB_ALL_HANDLES,
events_handler, attrib, NULL);
g_attrib_register(attrib, ATT_OP_HANDLE_IND, GATTRIB_ALL_HANDLES,
diff --git a/src/device.c b/src/device.c
index db6c4f8..6e1f8ea 100644
--- a/src/device.c
+++ b/src/device.c
@@ -3628,11 +3628,17 @@ bool device_attach_attrib(struct btd_device *dev, GIOChannel *io)
GError *gerr = NULL;
GAttrib *attrib;
BtIOSecLevel sec_level;
+ uint16_t mtu;
+ uint16_t cid;
bt_io_get(io, &gerr, BT_IO_OPT_SEC_LEVEL, &sec_level,
+ BT_IO_OPT_IMTU, &mtu,
+ BT_IO_OPT_CID, &cid,
BT_IO_OPT_INVALID);
+
if (gerr) {
error("bt_io_get: %s", gerr->message);
+ mtu = ATT_DEFAULT_LE_MTU;
g_error_free(gerr);
return false;
}
@@ -3650,7 +3656,10 @@ bool device_attach_attrib(struct btd_device *dev, GIOChannel *io)
}
}
- attrib = g_attrib_new(io);
+ if (cid == ATT_CID)
+ mtu = ATT_DEFAULT_LE_MTU;
+
+ attrib = g_attrib_new(io, mtu);
if (!attrib) {
error("Unable to create new GAttrib instance");
return false;
--
2.1.0.rc2.206.gedb03e5
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