[Precise PATCH] Bluetooth: Fix l2cap conn failures for ssp devices

Ming Lei ming.lei at canonical.com
Mon Mar 12 07:48:23 UTC 2012

>From 18daf1644e634bae951a6e3d4d19d89170209762 Mon Sep 17 00:00:00 2001
From: Peter Hurley <peter at hurleysoftware.com>
Date: Fri, 13 Jan 2012 15:11:30 +0100
Subject: [PATCH] Bluetooth: Fix l2cap conn failures for ssp devices

Commit 330605423c fixed l2cap conn establishment for non-ssp remote
devices by not setting HCI_CONN_ENCRYPT_PEND every time conn security
is tested (which was always returning failure on any subsequent
security checks).

However, this broke l2cap conn establishment for ssp remote devices
when an ACL link was already established at SDP-level security. This
fix ensures that encryption must be pending whenever authentication
is also pending.

BugLink: http://bugs.launchpad.net/bugs/791019
Upstream discusstion: http://marc.info/?t=131292188200002&r=1&w=2

Signed-off-by: Peter Hurley <peter at hurleysoftware.com>
Tested-by: Daniel Wagner <daniel.wagner at bmw-carit.de>
Acked-by: Marcel Holtmann <marcel at holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg at intel.com>
This wasn't cc:ed stable at kernel.org, but was merged to 3.3-rc6.
 net/bluetooth/hci_conn.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 3db4324..07bc69e 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -635,6 +635,10 @@ static int hci_conn_auth(struct hci_conn *conn,
__u8 sec_level, __u8 auth_type)

 	if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) {
 		struct hci_cp_auth_requested cp;
+		/* encrypt must be pending if auth is also pending */
+		set_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend);
 		cp.handle = cpu_to_le16(conn->handle);
 		hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED,
 							sizeof(cp), &cp);

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