[PATCH BlueZ v4 03/20] client/mgmt: Print Connection Subrate event

[Luiz Augusto von Dentz <luiz.dentz@gmail.com>]

From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Print the MGMT Connection Subrate event, generated as a result of a
LE Connection Rate Request, e.g. after mgmt.conn-subrate, or a change
initiated by the remote device, so the new connection rate can be
confirmed.

Assisted-by: OpenCode:claude-opus-5.5
---
 client/mgmt.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/client/mgmt.c b/client/mgmt.c
index cd2ef80221ad..a7069e5bbb37 100644
--- a/client/mgmt.c
+++ b/client/mgmt.c
@@ -499,6 +499,35 @@ static void disconnected(uint16_t index, uint16_t len, const void *param,
 			index, addr, typestr(ev->addr.type), reason);
 }
 
+static void conn_subrate(uint16_t index, uint16_t len, const void *param,
+							void *user_data)
+{
+	const struct mgmt_ev_conn_subrate *ev = param;
+	char addr[18];
+
+	if (len < sizeof(*ev)) {
+		error("Invalid connection subrate event length (%u bytes)",
+									len);
+		return;
+	}
+
+	ba2str(&ev->addr.bdaddr, addr);
+
+	if (ev->status) {
+		print("hci%u %s type %s connection subrate failed status "
+			"0x%02x (%s)", index, addr, typestr(ev->addr.type),
+			ev->status, mgmt_errstr(ev->status));
+		return;
+	}
+
+	print("hci%u %s type %s connection subrate interval 0x%04x "
+		"subrate 0x%04x latency 0x%04x cont_num 0x%04x timeout 0x%04x",
+		index, addr, typestr(ev->addr.type),
+		le16_to_cpu(ev->interval), le16_to_cpu(ev->subrate),
+		le16_to_cpu(ev->latency), le16_to_cpu(ev->cont_num),
+		le16_to_cpu(ev->supv_timeout));
+}
+
 static void conn_failed(uint16_t index, uint16_t len, const void *param,
 							void *user_data)
 {
@@ -6006,6 +6035,8 @@ static void register_mgmt_callbacks(struct mgmt *mgmt, uint16_t index)
 								NULL, NULL);
 	mgmt_register(mgmt, MGMT_EV_CONNECT_FAILED, index, conn_failed,
 								NULL, NULL);
+	mgmt_register(mgmt, MGMT_EV_CONN_SUBRATE, index, conn_subrate,
+								NULL, NULL);
 	mgmt_register(mgmt, MGMT_EV_AUTH_FAILED, index, auth_failed,
 								NULL, NULL);
 	mgmt_register(mgmt, MGMT_EV_CLASS_OF_DEV_CHANGED, index,
-- 
2.55.0