[PATCH BlueZ 2/3] shared/att: Fix attempting to send Exchange MTU on EATT bearer
From: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Date: 2021-08-25 21:14:24
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Luiz Augusto von Dentz <redacted> EATT bearer shall use the L2CAP signalling for negotiating the MTU size. --- src/shared/att.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/src/shared/att.c b/src/shared/att.c
index 665d7f4b8..329497728 100644
--- a/src/shared/att.c
+++ b/src/shared/att.c@@ -411,10 +411,17 @@ static struct att_send_op *pick_next_send_op(struct bt_att_chan *chan) */ if (!chan->pending_req) { op = queue_peek_head(att->req_queue); - if (op && op->len <= chan->mtu) + if (op && op->len <= chan->mtu) { + /* Don't send Exchange MTU over EATT */ + if (op->opcode == BT_ATT_OP_MTU_REQ && + chan->type == BT_ATT_EATT) + goto indicate; + return queue_pop_head(att->req_queue); + } } +indicate: /* There is either a request pending or no requests queued. If there is * no pending indication, pick an operation from the indication queue. */
--
2.31.1