From 6de0e0d01aeafc1903396cf3265b5a444d132a8a Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@nbd.name>
Date: Wed, 8 Nov 2023 11:20:41 +0100
Subject: [PATCH] hostapd: use rtnl to set up interfaces

In wpa_supplicant, set up wlan interfaces before adding them

Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry picked from commit c2a30b6e01aa756cd7d50c578ab4344c725ecc59)
---
 package/network/services/hostapd/files/common.uc         | 7 ++++++-
 package/network/services/hostapd/files/wdev.uc           | 6 +++---
 package/network/services/hostapd/files/wpa_supplicant.uc | 3 ++-
 3 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/package/network/services/hostapd/files/common.uc b/package/network/services/hostapd/files/common.uc
index 8399d3ff96..4c33779af9 100644
--- a/package/network/services/hostapd/files/common.uc
+++ b/package/network/services/hostapd/files/common.uc
@@ -144,6 +144,11 @@ function wdev_set_mesh_params(name, data)
 	return nl80211.error();
 }
 
+function wdev_set_up(name, up)
+{
+	rtnl.request(rtnl.const.RTM_SETLINK, 0, { dev: name, change: 1, flags: up ? 1 : 0 });
+}
+
 function phy_sysfs_file(phy, name)
 {
 	return trim(readfile(`/sys/class/ieee80211/${phy}/${name}`));
@@ -365,4 +370,4 @@ function vlist_new(cb) {
 		}, vlist_proto);
 }
 
-export { wdev_remove, wdev_create, wdev_set_mesh_params, is_equal, vlist_new, phy_is_fullmac, phy_open };
+export { wdev_remove, wdev_create, wdev_set_mesh_params, wdev_set_up, is_equal, vlist_new, phy_is_fullmac, phy_open };
diff --git a/package/network/services/hostapd/files/wdev.uc b/package/network/services/hostapd/files/wdev.uc
index 800bb32d24..ff4d629fd6 100644
--- a/package/network/services/hostapd/files/wdev.uc
+++ b/package/network/services/hostapd/files/wdev.uc
@@ -1,6 +1,6 @@
 #!/usr/bin/env ucode
 'use strict';
-import { vlist_new, is_equal, wdev_create, wdev_set_mesh_params, wdev_remove, phy_open } from "/usr/share/hostap/common.uc";
+import { vlist_new, is_equal, wdev_create, wdev_set_mesh_params, wdev_remove, wdev_set_up, phy_open } from "/usr/share/hostap/common.uc";
 import { readfile, writefile, basename, readlink, glob } from "fs";
 let libubus = require("ubus");
 
@@ -22,7 +22,7 @@ function iface_start(wdev)
 	let ifname = wdev.ifname;
 
 	if (readfile(`/sys/class/net/${ifname}/ifindex`)) {
-		system([ "ip", "link", "set", "dev", ifname, "down" ]);
+		wdev_set_up(ifname, false);
 		wdev_remove(ifname);
 	}
 	let wdev_config = {};
@@ -31,7 +31,7 @@ function iface_start(wdev)
 	if (!wdev_config.macaddr && wdev.mode != "monitor")
 		wdev_config.macaddr = phydev.macaddr_next();
 	wdev_create(phy, ifname, wdev_config);
-	system([ "ip", "link", "set", "dev", ifname, "up" ]);
+	wdev_set_up(ifname, true);
 	if (wdev.freq)
 		system(`iw dev ${ifname} set freq ${wdev.freq} ${wdev.htmode}`);
 	if (wdev.mode == "adhoc") {
diff --git a/package/network/services/hostapd/files/wpa_supplicant.uc b/package/network/services/hostapd/files/wpa_supplicant.uc
index c3fd73dfee..d624f27cdd 100644
--- a/package/network/services/hostapd/files/wpa_supplicant.uc
+++ b/package/network/services/hostapd/files/wpa_supplicant.uc
@@ -1,6 +1,6 @@
 let libubus = require("ubus");
 import { open, readfile } from "fs";
-import { wdev_create, wdev_set_mesh_params, wdev_remove, is_equal, vlist_new, phy_open } from "common";
+import { wdev_create, wdev_set_mesh_params, wdev_remove, is_equal, wdev_set_up, vlist_new, phy_open } from "common";
 
 let ubus = libubus.connect();
 
@@ -40,6 +40,7 @@ function iface_start(phydev, iface, macaddr_list)
 	let ret = wdev_create(phy, ifname, wdev_config);
 	if (ret)
 		wpas.printf(`Failed to create device ${ifname}: ${ret}`);
+	wdev_set_up(ifname, true);
 	wpas.add_iface(iface.config);
 	iface.running = true;
 }