From: Taehee Yoo <ap420073@xxxxxxxxx>
[ Upstream commit 627f16931bf3cb20d50274d9341380ac2c3035fd ]
When AMT gateway starts sending a new request message, it should
regenerate the nonce variable.
Fixes: cbc21dc1cfe9 ("amt: add data plane of amt interface")
Signed-off-by: Taehee Yoo <ap420073@xxxxxxxxx>
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/amt.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/amt.c b/drivers/net/amt.c
index ff859d4a4b50..2fe56640e493 100644
--- a/drivers/net/amt.c
+++ b/drivers/net/amt.c
@@ -963,9 +963,13 @@ static void amt_event_send_request(struct amt_dev *amt)
amt->remote_ip = 0;
amt_update_gw_status(amt, AMT_STATUS_INIT, false);
amt->req_cnt = 0;
+ amt->nonce = 0;
goto out;
}
+ if (!amt->req_cnt)
+ get_random_bytes(&amt->nonce, sizeof(__be32));
+
amt_send_request(amt, false);
amt_send_request(amt, true);
amt_update_gw_status(amt, AMT_STATUS_SENT_REQUEST, true);
--
2.35.1
