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openwrtv3/package/network/services/hostapd/patches/021-mesh-make-forwarding-configurable.patch
Daniel Golle ff8df2b3f9 hostapd: mesh: make forwarding configurable 
For unencrypted mesh networks our scripts take care of setting
the various mesh_param values. wpa_supplicant changes somes of them
when being used for SAE encrypted mesh and previously didn't allow
configuring any of them. Add support for setting mesh_fwding (which
has to be set to 0 when using other routing protocols on top of
802.11s) and update our script to pass the value to wpa_supplicant.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2018-04-18 22:12:18 +02:00

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From d11881c1ad0d6a102962d1a040a398f597256ae0 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Wed, 18 Apr 2018 19:24:31 +0200
Subject: [PATCH] mesh: make forwarding configurable
To: hostap@lists.infradead.org
Cc: Jouni Malinen <j@w1.fi>,
Johannes Berg <johannes.berg@intel.com>
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 | 3 +++
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 | 6 ++++++
10 files changed, 37 insertions(+), 2 deletions(-)
diff --git a/src/ap/ap_config.h b/src/ap/ap_config.h
index 03ab80d43..804385e93 100644
--- a/src/ap/ap_config.h
+++ b/src/ap/ap_config.h
@@ -49,6 +49,7 @@ struct mesh_conf {
int dot11MeshRetryTimeout; /* msec */
int dot11MeshConfirmTimeout; /* msec */
int dot11MeshHoldingTimeout; /* msec */
+ int mesh_fwding;
};
#define MAX_STA_COUNT 2007
@@ -612,6 +613,7 @@ struct hostapd_bss_config {
#define MESH_ENABLED BIT(0)
int mesh;
+ int mesh_fwding;
u8 radio_measurements[RRM_CAPABILITIES_IE_LEN];
diff --git a/src/drivers/driver.h b/src/drivers/driver.h
index 6c9245584..7f1ec3697 100644
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -1363,6 +1363,7 @@ 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.
@@ -1372,6 +1373,7 @@ struct wpa_driver_mesh_bss_params {
int peer_link_timeout;
int max_peer_links;
int rssi_threshold;
+ int forwarding;
u16 ht_opmode;
};
diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index e9cb4ae2f..f3de61886 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -9197,6 +9197,9 @@ static int nl80211_put_mesh_config(struct nl_msg *msg,
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)) ||
diff --git a/wpa_supplicant/config.c b/wpa_supplicant/config.c
index a0b8cd007..0212e3f86 100644
--- a/wpa_supplicant/config.c
+++ b/wpa_supplicant/config.c
@@ -2211,6 +2211,7 @@ static const struct parse_data ssid_fields[] = {
#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) },
@@ -2757,6 +2758,7 @@ void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
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
@@ -3886,6 +3888,7 @@ struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
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;
@@ -4508,6 +4511,7 @@ static const struct global_parse_data global_fields[] = {
{ 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 },
diff --git a/wpa_supplicant/config.h b/wpa_supplicant/config.h
index 05c4f8fb9..491d8aa5c 100644
--- 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.
@@ -1269,6 +1270,8 @@ struct wpa_config {
*/
int mesh_max_inactivity;
+ int mesh_fwding;
+
/**
* dot11RSNASAERetransPeriod - Timeout to retransmit SAE Auth frame
*
diff --git a/wpa_supplicant/config_file.c b/wpa_supplicant/config_file.c
index 5a7186961..c4112b3ff 100644
--- a/wpa_supplicant/config_file.c
+++ b/wpa_supplicant/config_file.c
@@ -816,6 +816,7 @@ static void wpa_config_write_network(FILE *f, struct wpa_ssid *ssid)
#endif /* IEEE8021X_EAPOL */
INT(mode);
INT(no_auto_peer);
+ INT(mesh_fwding);
INT(frequency);
INT(fixed_freq);
#ifdef CONFIG_ACS
@@ -1433,6 +1434,9 @@ static void wpa_config_write_global(FILE *f, struct wpa_config *config)
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",
diff --git a/wpa_supplicant/config_ssid.h b/wpa_supplicant/config_ssid.h
index 87a45c435..24d1848e0 100644
--- a/wpa_supplicant/config_ssid.h
+++ b/wpa_supplicant/config_ssid.h
@@ -492,6 +492,11 @@ struct wpa_ssid {
int dot11MeshConfirmTimeout; /* msec */
int dot11MeshHoldingTimeout; /* msec */
+ /**
+ * Mesh network layer-2 forwarding
+ */
+ int mesh_fwding;
+
int ht;
int ht40;
diff --git a/wpa_supplicant/mesh.c b/wpa_supplicant/mesh.c
index 3c2ee97da..22c10a015 100644
--- a/wpa_supplicant/mesh.c
+++ b/wpa_supplicant/mesh.c
@@ -121,6 +121,7 @@ static struct mesh_conf * mesh_config_create(struct wpa_supplicant *wpa_s,
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;
@@ -254,6 +255,7 @@ static int wpa_supplicant_mesh_init(struct wpa_supplicant *wpa_s,
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->conf->country[0]) {
conf->ieee80211h = 1;
@@ -506,6 +508,10 @@ int wpa_supplicant_join_mesh(struct wpa_supplicant *wpa_s,
}
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;
+
wpa_s->mesh_params = params;
if (wpa_supplicant_mesh_init(wpa_s, ssid, &params->freq)) {
wpa_msg(wpa_s, MSG_ERROR, "Failed to init mesh");
diff --git a/wpa_supplicant/mesh_mpm.c b/wpa_supplicant/mesh_mpm.c
index bc3cc5ef9..e7058e646 100644
--- a/wpa_supplicant/mesh_mpm.c
+++ b/wpa_supplicant/mesh_mpm.c
@@ -288,9 +288,9 @@ static void mesh_mpm_send_plink_action(struct wpa_supplicant *wpa_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);
diff --git a/wpa_supplicant/wpa_supplicant.conf b/wpa_supplicant/wpa_supplicant.conf
index 972e7e73d..e1c475f37 100644
--- a/wpa_supplicant/wpa_supplicant.conf
+++ b/wpa_supplicant/wpa_supplicant.conf
@@ -153,6 +153,12 @@ 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
+
+# Accept additional peer links
+#mesh_auto_open_plinks=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
--
2.17.0
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