From: Isak Westin <isak.westin@loytec.com>
To: linux-bluetooth@vger.kernel.org
Cc: Isak Westin <isak.westin@loytec.com>
Subject: [PATCH BlueZ 1/4] mesh: Ignore Secure Network Beacon from subnet
Date: Thu, 29 Sep 2022 13:03:41 +0200 [thread overview]
Message-ID: <20220929110344.26130-2-isak.westin@loytec.com> (raw)
In-Reply-To: <20220929110344.26130-1-isak.westin@loytec.com>
If this node is a member of a primary subnet and receives a Secure Network
beacon on a secondary subnet with an IV Index greater than the last known
IV Index of the primary subnet, the Secure Network beacon shall be ignored.
See MshPRFv1.0.1 section 3.10.5.
---
mesh/net.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/mesh/net.c b/mesh/net.c
index 7fec98531..dc3d1fd80 100644
--- a/mesh/net.c
+++ b/mesh/net.c
@@ -2708,7 +2708,7 @@ static void process_beacon(void *net_ptr, void *user_data)
struct net_beacon_data *beacon_data = user_data;
uint32_t ivi;
bool ivu, kr, local_kr;
- struct mesh_subnet *subnet;
+ struct mesh_subnet *subnet, *primary_subnet;
ivi = beacon_data->ivi;
@@ -2723,6 +2723,17 @@ static void process_beacon(void *net_ptr, void *user_data)
if (!subnet)
return;
+ /*
+ * @MshPRFv1.0.1 section 3.10.5: IV Update procedure
+ * If this node is a member of a primary subnet and receives a Secure
+ * Network beacon on a secondary subnet with an IV Index greater than
+ * the last known IV Index of the primary subnet, the Secure Network
+ * beacon shall be ignored.
+ */
+ primary_subnet = get_primary_subnet(net);
+ if (primary_subnet && subnet != primary_subnet && ivi > net->iv_index)
+ return;
+
/* Get IVU and KR boolean bits from beacon */
ivu = beacon_data->ivu;
kr = beacon_data->kr;
--
2.20.1
next prev parent reply other threads:[~2022-09-29 11:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-29 11:03 [PATCH BlueZ 0/4] Mesh: Fix IV update and KeyRefresh procedures Isak Westin
2022-09-29 11:03 ` Isak Westin [this message]
2022-09-29 12:18 ` bluez.test.bot
2022-09-29 11:03 ` [PATCH BlueZ 2/4] mesh: Ignore SNB with invalid IV Index values Isak Westin
2022-09-29 11:03 ` [PATCH BlueZ 3/4] mesh: Allow Key refresh to skip Phase 2 Isak Westin
2022-09-29 11:03 ` [PATCH BlueZ 4/4] mesh: Allow Key Refresh Phase 0 to 3 transition Isak Westin
2022-10-03 21:30 ` [PATCH BlueZ 0/4] Mesh: Fix IV update and KeyRefresh procedures patchwork-bot+bluetooth
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