For BREDR-ATT, according to spec, ATT MTU is same has
L2CAP configured MTU on which ATT is running. So, set the MTU to
L2CAP configuration and for LE-ATT adjust the ATT MTU based on
EXCHANGE_MTU request and response.
---
src/device.c | 2 +-
src/shared/gatt-helpers.c | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/device.c b/src/device.c
index f693b70..cf4c8df 100644
--- a/src/device.c
+++ b/src/device.c
@@ -4922,7 +4922,7 @@ bool device_attach_att(struct btd_device *dev, GIOChannel *io)
}
dev->att_mtu = MIN(mtu, BT_ATT_MAX_LE_MTU);
- attrib = g_attrib_new(io, BT_ATT_DEFAULT_LE_MTU, false);
+ attrib = g_attrib_new(io, dev->att_mtu, false);
if (!attrib) {
error("Unable to create new GAttrib instance");
return false;
diff --git a/src/shared/gatt-helpers.c b/src/shared/gatt-helpers.c
index 6b39bb1..8ec65be 100644
--- a/src/shared/gatt-helpers.c
+++ b/src/shared/gatt-helpers.c
@@ -517,6 +517,7 @@ static void mtu_cb(uint8_t opcode, const void *pdu, uint16_t length,
if (opcode == BT_ATT_OP_ERROR_RSP) {
success = false;
att_ecode = process_error(pdu, length);
+ bt_att_set_mtu(op->att, BT_ATT_DEFAULT_LE_MTU);
goto done;
}
--
1.9.1
--
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