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openwrt/package/network/services/hostapd/patches/018-mesh-make-forwarding-configurable.patch
Daniel Golle 017320ead3 hostapd: bring back mesh patches 
Bring back 802.11s mesh features to the level previously available
before the recent hostapd version bump. This is mostly to support use
of 802.11s on DFS channels, but also making mesh forwarding
configurable which is crucial for use of 802.11s MAC with other routing
protocols, such as batman-adv, on top.
While at it, fix new compiler warning by adapting 700-wifi-reload.patch
to upstream changes, now building without any warnings again.

Fixes: 0a3ec87a66 ("hostapd: update to latest Git hostap_2_9-1238-gdd2daf0848ed")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2020-05-21 10:21:59 +01:00

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From 90fe6429624fc48bc0e5d2d7eeecb7498708b5e3 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Wed, 18 Apr 2018 19:24:31 +0200
Subject: [PATCH 18/18] mesh: make forwarding configurable
Allow mesh_fwding to be specified in a mesh bss config, pass that
to the driver (only nl80211 implemented for now) and announce
forwarding capability accordingly.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
src/ap/ap_config.h | 2 ++
src/drivers/driver.h | 2 ++
src/drivers/driver_nl80211.c | 3 +++
wpa_supplicant/config.c | 4 ++++
wpa_supplicant/config.h | 9 +++++++++
wpa_supplicant/config_file.c | 4 ++++
wpa_supplicant/config_ssid.h | 5 +++++
wpa_supplicant/mesh.c | 6 ++++++
wpa_supplicant/mesh_mpm.c | 4 ++--
wpa_supplicant/wpa_supplicant.conf | 3 +++
10 files changed, 40 insertions(+), 2 deletions(-)
--- a/src/ap/ap_config.h
+++ b/src/ap/ap_config.h
@@ -51,6 +51,7 @@ struct mesh_conf {
int dot11MeshRetryTimeout; /* msec */
int dot11MeshConfirmTimeout; /* msec */
int dot11MeshHoldingTimeout; /* msec */
+ int mesh_fwding;
};
#define MAX_STA_COUNT 2007
@@ -691,6 +692,7 @@ struct hostapd_bss_config {
#define MESH_ENABLED BIT(0)
int mesh;
+ int mesh_fwding;
u8 radio_measurements[RRM_CAPABILITIES_IE_LEN];
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -1515,6 +1515,7 @@ struct wpa_driver_mesh_bss_params {
#define WPA_DRIVER_MESH_CONF_FLAG_MAX_PEER_LINKS 0x00000004
#define WPA_DRIVER_MESH_CONF_FLAG_HT_OP_MODE 0x00000008
#define WPA_DRIVER_MESH_CONF_FLAG_RSSI_THRESHOLD 0x00000010
+#define WPA_DRIVER_MESH_CONF_FLAG_FORWARDING 0x00000020
/*
* TODO: Other mesh configuration parameters would go here.
* See NL80211_MESHCONF_* for all the mesh config parameters.
@@ -1524,6 +1525,7 @@ struct wpa_driver_mesh_bss_params {
int peer_link_timeout;
int max_peer_links;
int rssi_threshold;
+ int forwarding;
u16 ht_opmode;
};
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -10006,6 +10006,9 @@ static int nl80211_put_mesh_config(struc
if (((params->flags & WPA_DRIVER_MESH_CONF_FLAG_AUTO_PLINKS) &&
nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
params->auto_plinks)) ||
+ ((params->flags & WPA_DRIVER_MESH_CONF_FLAG_FORWARDING) &&
+ nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
+ params->forwarding)) ||
((params->flags & WPA_DRIVER_MESH_CONF_FLAG_MAX_PEER_LINKS) &&
nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
params->max_peer_links)) ||
--- a/wpa_supplicant/config.c
+++ b/wpa_supplicant/config.c
@@ -2473,6 +2473,7 @@ static const struct parse_data ssid_fiel
#ifdef CONFIG_MESH
{ INT_RANGE(mode, 0, 5) },
{ INT_RANGE(no_auto_peer, 0, 1) },
+ { INT_RANGE(mesh_fwding, 0, 1) },
{ INT_RANGE(mesh_rssi_threshold, -255, 1) },
#else /* CONFIG_MESH */
{ INT_RANGE(mode, 0, 4) },
@@ -3046,6 +3047,7 @@ void wpa_config_set_network_defaults(str
ssid->dot11MeshRetryTimeout = DEFAULT_MESH_RETRY_TIMEOUT;
ssid->dot11MeshConfirmTimeout = DEFAULT_MESH_CONFIRM_TIMEOUT;
ssid->dot11MeshHoldingTimeout = DEFAULT_MESH_HOLDING_TIMEOUT;
+ ssid->mesh_fwding = DEFAULT_MESH_FWDING;
ssid->mesh_rssi_threshold = DEFAULT_MESH_RSSI_THRESHOLD;
#endif /* CONFIG_MESH */
#ifdef CONFIG_HT_OVERRIDES
@@ -4273,6 +4275,7 @@ struct wpa_config * wpa_config_alloc_emp
config->user_mpm = DEFAULT_USER_MPM;
config->max_peer_links = DEFAULT_MAX_PEER_LINKS;
config->mesh_max_inactivity = DEFAULT_MESH_MAX_INACTIVITY;
+ config->mesh_fwding = DEFAULT_MESH_FWDING;
config->dot11RSNASAERetransPeriod =
DEFAULT_DOT11_RSNA_SAE_RETRANS_PERIOD;
config->fast_reauth = DEFAULT_FAST_REAUTH;
@@ -4911,6 +4914,7 @@ static const struct global_parse_data gl
{ INT(user_mpm), 0 },
{ INT_RANGE(max_peer_links, 0, 255), 0 },
{ INT(mesh_max_inactivity), 0 },
+ { INT_RANGE(mesh_fwding, 0, 1), 0 },
{ INT(dot11RSNASAERetransPeriod), 0 },
#endif /* CONFIG_MESH */
{ INT(disable_scan_offload), 0 },
--- a/wpa_supplicant/config.h
+++ b/wpa_supplicant/config.h
@@ -18,6 +18,7 @@
#define DEFAULT_USER_MPM 1
#define DEFAULT_MAX_PEER_LINKS 99
#define DEFAULT_MESH_MAX_INACTIVITY 300
+#define DEFAULT_MESH_FWDING 1
/*
* The default dot11RSNASAERetransPeriod is defined as 40 ms in the standard,
* but use 1000 ms in practice to avoid issues on low power CPUs.
@@ -1351,6 +1352,14 @@ struct wpa_config {
int mesh_max_inactivity;
/**
+ * mesh_fwding - Mesh network layer-2 forwarding
+ *
+ * This controls whether to enable layer-2 forwarding.
+ * By default: 1: enabled
+ */
+ int mesh_fwding;
+
+ /**
* dot11RSNASAERetransPeriod - Timeout to retransmit SAE Auth frame
*
* This timeout value is used in mesh STA to retransmit
--- a/wpa_supplicant/config_file.c
+++ b/wpa_supplicant/config_file.c
@@ -866,6 +866,7 @@ static void wpa_config_write_network(FIL
#endif /* IEEE8021X_EAPOL */
INT(mode);
INT(no_auto_peer);
+ INT(mesh_fwding);
INT(frequency);
INT(enable_edmg);
INT(edmg_channel);
@@ -1526,6 +1527,9 @@ static void wpa_config_write_global(FILE
fprintf(f, "mesh_max_inactivity=%d\n",
config->mesh_max_inactivity);
+ if (config->mesh_fwding != DEFAULT_MESH_FWDING)
+ fprintf(f, "mesh_fwding=%d\n", config->mesh_fwding);
+
if (config->dot11RSNASAERetransPeriod !=
DEFAULT_DOT11_RSNA_SAE_RETRANS_PERIOD)
fprintf(f, "dot11RSNASAERetransPeriod=%d\n",
--- a/wpa_supplicant/config_ssid.h
+++ b/wpa_supplicant/config_ssid.h
@@ -540,6 +540,11 @@ struct wpa_ssid {
int dot11MeshConfirmTimeout; /* msec */
int dot11MeshHoldingTimeout; /* msec */
+ /**
+ * Mesh network layer-2 forwarding
+ */
+ int mesh_fwding;
+
int ht;
int ht40;
--- a/wpa_supplicant/mesh.c
+++ b/wpa_supplicant/mesh.c
@@ -130,6 +130,7 @@ static struct mesh_conf * mesh_config_cr
conf->mesh_cc_id = 0;
conf->mesh_sp_id = MESH_SYNC_METHOD_NEIGHBOR_OFFSET;
conf->mesh_auth_id = (conf->security & MESH_CONF_SEC_AUTH) ? 1 : 0;
+ conf->mesh_fwding = ssid->mesh_fwding;
conf->dot11MeshMaxRetries = ssid->dot11MeshMaxRetries;
conf->dot11MeshRetryTimeout = ssid->dot11MeshRetryTimeout;
conf->dot11MeshConfirmTimeout = ssid->dot11MeshConfirmTimeout;
@@ -335,6 +336,7 @@ static int wpa_supplicant_mesh_init(stru
bss->conf->start_disabled = 1;
bss->conf->mesh = MESH_ENABLED;
bss->conf->ap_max_inactivity = wpa_s->conf->mesh_max_inactivity;
+ bss->conf->mesh_fwding = wpa_s->conf->mesh_fwding;
if (ieee80211_is_dfs(ssid->frequency, wpa_s->hw.modes,
wpa_s->hw.num_modes) && wpa_s->conf->country[0]) {
@@ -556,6 +558,10 @@ int wpa_supplicant_join_mesh(struct wpa_
}
params->conf.peer_link_timeout = wpa_s->conf->mesh_max_inactivity;
+ /* always explicitely set forwarding to on or off for now */
+ params->conf.flags |= WPA_DRIVER_MESH_CONF_FLAG_FORWARDING;
+ params->conf.forwarding = ssid->mesh_fwding;
+
os_free(wpa_s->mesh_params);
wpa_s->mesh_params = params;
if (wpa_supplicant_mesh_init(wpa_s, ssid, &params->freq)) {
--- a/wpa_supplicant/mesh_mpm.c
+++ b/wpa_supplicant/mesh_mpm.c
@@ -303,9 +303,9 @@ static void mesh_mpm_send_plink_action(s
info = (bss->num_plinks > 63 ? 63 : bss->num_plinks) << 1;
/* TODO: Add Connected to Mesh Gate/AS subfields */
wpabuf_put_u8(buf, info);
- /* always forwarding & accepting plinks for now */
+ /* set forwarding & always accepting plinks for now */
wpabuf_put_u8(buf, MESH_CAP_ACCEPT_ADDITIONAL_PEER |
- MESH_CAP_FORWARDING);
+ (conf->mesh_fwding ? MESH_CAP_FORWARDING : 0));
} else { /* Peer closing frame */
/* IE: Mesh ID */
wpabuf_put_u8(buf, WLAN_EID_MESH_ID);
--- a/wpa_supplicant/wpa_supplicant.conf
+++ b/wpa_supplicant/wpa_supplicant.conf
@@ -150,6 +150,9 @@ ap_scan=1
# This timeout value is used in mesh STA to clean up inactive stations.
#mesh_max_inactivity=300
+# Enable 802.11s layer-2 routing and forwarding
+#mesh_fwding=1
+
# cert_in_cb - Whether to include a peer certificate dump in events
# This controls whether peer certificates for authentication server and
# its certificate chain are included in EAP peer certificate events. This is
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