openwrt/package/network/services/hostapd/patches/011-mesh-use-deterministic-channel-on-channel-switch.patch
Nick Hainke 304423a4ff
hostapd: update to 2023-03-29
Add patches:
- 170-wpa_supplicant-fix-compiling-without-IEEE8021X_EAPOL.patch

Remove upstreamed:
- 170-DPP-fix-memleak-of-intro.peer_key.patch
- 461-driver_nl80211-use-new-parameters-during-ibss-join.patch
- 800-acs-don-t-select-indoor-channel-on-outdoor-operation.patch
- 992-openssl-include-rsa.patch

Automatically refreshed:
- 011-mesh-use-deterministic-channel-on-channel-switch.patch
- 021-fix-sta-add-after-previous-connection.patch
- 022-hostapd-fix-use-of-uninitialized-stack-variables.patch
- 030-driver_nl80211-rewrite-neigh-code-to-not-depend-on-l.patch
- 040-mesh-allow-processing-authentication-frames-in-block.patch
- 050-build_fix.patch
- 110-mbedtls-TLS-crypto-option-initial-port.patch
- 120-mbedtls-fips186_2_prf.patch
- 140-tests-Makefile-make-run-tests-with-CONFIG_TLS.patch
- 150-add-NULL-checks-encountered-during-tests-hwsim.patch
- 160-dpp_pkex-EC-point-mul-w-value-prime.patch
- 200-multicall.patch
- 300-noscan.patch
- 310-rescan_immediately.patch
- 330-nl80211_fix_set_freq.patch
- 341-mesh-ctrl-iface-channel-switch.patch
- 360-ctrl_iface_reload.patch
- 381-hostapd_cli_UNKNOWN-COMMAND.patch
- 390-wpa_ie_cap_workaround.patch
- 410-limit_debug_messages.patch
- 420-indicate-features.patch
- 430-hostapd_cli_ifdef.patch
- 450-scan_wait.patch
- 460-wpa_supplicant-add-new-config-params-to-be-used-with.patch
- 463-add-mcast_rate-to-11s.patch
- 465-hostapd-config-support-random-BSS-color.patch
- 500-lto-jobserver-support.patch
- 590-rrm-wnm-statistics.patch
- 710-vlan_no_bridge.patch
- 720-iface_max_num_sta.patch
- 730-ft_iface.patch
- 750-qos_map_set_without_interworking.patch
- 751-qos_map_ignore_when_unsupported.patch
- 760-dynamic_own_ip.patch
- 761-shared_das_port.patch
- 990-ctrl-make-WNM_AP-functions-dependant-on-CONFIG_AP.patch

Manually refresh:
- 010-mesh-Allow-DFS-channels-to-be-selected-if-dfs-is-ena.patch
- 301-mesh-noscan.patch
- 340-reload_freq_change.patch
- 350-nl80211_del_beacon_bss.patch
- 370-ap_sta_support.patch
- 380-disable_ctrl_iface_mib.patch
- 464-fix-mesh-obss-check.patch
- 470-survey_data_fallback.patch
- 600-ubus_support.patch
- 700-wifi-reload.patch
- 711-wds_bridge_force.patch
- 740-snoop_iface.patch

Tested-by: Packet Please <pktpls@systemli.org> [Fritzbox 4040 (ipq40xx),
           EAP225-Outdoor (ath79); 802.11s, WPA3 OWE, and WPA3 PSK]
Tested-by: Andrew Sim <andrewsimz@gmail.com> [mediatek/filogic]
Signed-off-by: Nick Hainke <vincent@systemli.org>
2023-04-22 23:18:15 +02:00

82 lines
2.5 KiB
Diff

From fc8ea40f6130ac18d9c66797de2cf1d5af55d496 Mon Sep 17 00:00:00 2001
From: Markus Theil <markus.theil@tu-ilmenau.de>
Date: Tue, 30 Jun 2020 14:19:07 +0200
Subject: [PATCH 19/19] mesh: use deterministic channel on channel switch
This patch uses a deterministic channel on DFS channel switch
in mesh networks. Otherwise, when switching to a usable but not
available channel, no CSA can be sent and a random channel is choosen
without notification of other nodes. It is then quite likely, that
the mesh network gets disconnected.
Fix this by using a deterministic number, based on the sha256 hash
of the mesh ID, in order to use at least a different number in each
mesh network.
Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
---
src/ap/dfs.c | 20 +++++++++++++++++++-
src/drivers/driver_nl80211.c | 4 ++++
2 files changed, 23 insertions(+), 1 deletion(-)
--- a/src/ap/dfs.c
+++ b/src/ap/dfs.c
@@ -17,6 +17,7 @@
#include "ap_drv_ops.h"
#include "drivers/driver.h"
#include "dfs.h"
+#include "crypto/crypto.h"
enum dfs_channel_type {
@@ -521,9 +522,14 @@ dfs_get_valid_channel(struct hostapd_ifa
int num_available_chandefs;
int chan_idx, chan_idx2;
int sec_chan_idx_80p80 = -1;
+ bool is_mesh = false;
int i;
u32 _rand;
+#ifdef CONFIG_MESH
+ is_mesh = iface->mconf;
+#endif
+
wpa_printf(MSG_DEBUG, "DFS: Selecting random channel");
*secondary_channel = 0;
*oper_centr_freq_seg0_idx = 0;
@@ -543,8 +549,20 @@ dfs_get_valid_channel(struct hostapd_ifa
if (num_available_chandefs == 0)
return NULL;
- if (os_get_random((u8 *) &_rand, sizeof(_rand)) < 0)
+ /* try to use deterministic channel in mesh, so that both sides
+ * have a chance to switch to the same channel */
+ if (is_mesh) {
+#ifdef CONFIG_MESH
+ u64 hash[4];
+ const u8 *meshid[1] = { &iface->mconf->meshid[0] };
+ const size_t meshid_len = iface->mconf->meshid_len;
+
+ sha256_vector(1, meshid, &meshid_len, (u8 *)&hash[0]);
+ _rand = hash[0] + hash[1] + hash[2] + hash[3];
+#endif
+ } else if (os_get_random((u8 *) &_rand, sizeof(_rand)) < 0)
return NULL;
+
chan_idx = _rand % num_available_chandefs;
dfs_find_channel(iface, &chan, chan_idx, type);
if (!chan) {
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -10739,6 +10739,10 @@ static int nl80211_switch_channel(void *
if (ret)
goto error;
+ if (drv->nlmode == NL80211_IFTYPE_MESH_POINT) {
+ nla_put_flag(msg, NL80211_ATTR_HANDLE_DFS);
+ }
+
/* beacon_csa params */
beacon_csa = nla_nest_start(msg, NL80211_ATTR_CSA_IES);
if (!beacon_csa)