[PATCH/RFC 07/18] config: add mesh mode, user_mpm, and no_auto_peer options

[Bob Copeland]

From: Thomas Pedersen <thomas at noack.us>

Modify network mode to support mode number 5 when CONFIG_MESH is
enabled.

Add user_mpm config parameter, when this is set to 1 (the default) the
peer link management is done on userspace, otherwise the peer management
will be done by the kernel.

Also add no_auto_peer parameter, which controls wheter a station will
automatically initiate peering to another mesh peer that comes into
range.

Signed-off-by: Javier Lopez <jlopex at gmail.com>
Signed-off-by: Jason Mobarak <x at jason.mobarak.name>
Signed-hostap: Thomas Pedersen <thomas at noack.us>
---
 wpa_supplicant/config.c      |  9 +++++++++
 wpa_supplicant/config.h      | 11 +++++++++++
 wpa_supplicant/config_file.c |  3 +++
 wpa_supplicant/config_ssid.h |  8 ++++++++
 wpa_supplicant/ctrl_iface.c  |  2 ++
 wpa_supplicant/mesh_mpm.c    |  7 +++++++
 6 files changed, 40 insertions(+)

diff --git a/wpa_supplicant/config.c b/wpa_supplicant/config.c
index 8cd4a2f..0b80ce2 100644
--- a/wpa_supplicant/config.c
+++ b/wpa_supplicant/config.c
@@ -1695,7 +1695,12 @@ static const struct parse_data ssid_fields[] = {
 	{ INTe(fragment_size) },
 	{ INTe(ocsp) },
 #endif /* IEEE8021X_EAPOL */
+#ifdef CONFIG_MESH
+	{ INT_RANGE(mode, 0, 5) },
+	{ INT_RANGE(no_auto_peer, 0, 1) },
+#else
 	{ INT_RANGE(mode, 0, 4) },
+#endif /* CONFIG_MESH */
 	{ INT_RANGE(proactive_key_caching, 0, 1) },
 	{ INT_RANGE(disabled, 0, 2) },
 	{ STR(id_str) },
@@ -3271,6 +3276,7 @@ struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
 		return NULL;
 	config->eapol_version = DEFAULT_EAPOL_VERSION;
 	config->ap_scan = DEFAULT_AP_SCAN;
+	config->user_mpm = DEFAULT_USER_MPM;
 	config->fast_reauth = DEFAULT_FAST_REAUTH;
 	config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
 	config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS;
@@ -3815,6 +3821,9 @@ static const struct global_parse_data global_fields[] = {
 #endif /* CONFIG_MACSEC */
 	{ INT(ap_scan), 0 },
 	{ FUNC(bgscan), 0 },
+#ifdef CONFIG_MESH
+	{ INT(user_mpm), 0 },
+#endif /* CONFIG_MESH */
 	{ INT(disable_scan_offload), 0 },
 	{ INT(fast_reauth), 0 },
 	{ STR(opensc_engine_path), 0 },
diff --git a/wpa_supplicant/config.h b/wpa_supplicant/config.h
index 52add9d..a6ca7de 100644
--- a/wpa_supplicant/config.h
+++ b/wpa_supplicant/config.h
@@ -15,6 +15,7 @@
 #else /* CONFIG_NO_SCAN_PROCESSING */
 #define DEFAULT_AP_SCAN 1
 #endif /* CONFIG_NO_SCAN_PROCESSING */
+#define DEFAULT_USER_MPM 1
 #define DEFAULT_FAST_REAUTH 1
 #define DEFAULT_P2P_GO_INTENT 7
 #define DEFAULT_P2P_INTRA_BSS 1
@@ -368,6 +369,16 @@ struct wpa_config {
 	int eapol_version;
 
 	/**
+	 * user_mpm - MPM residency
+	 *
+	 * 0: MPM lives in driver.
+	 * 1: wpa_supplicant handles peering and station allocation.
+	 *
+	 * If AMPE or SAE is enabled, the MPM is always in userspace.
+	 */
+	int user_mpm;
+
+	/**
 	 * ap_scan - AP scanning/selection
 	 *
 	 * By default, wpa_supplicant requests driver to perform AP
diff --git a/wpa_supplicant/config_file.c b/wpa_supplicant/config_file.c
index 98855d8..f1880cd 100644
--- a/wpa_supplicant/config_file.c
+++ b/wpa_supplicant/config_file.c
@@ -1179,6 +1179,9 @@ static void wpa_config_write_global(FILE *f, struct wpa_config *config)
 	if (config->p2p_search_delay != DEFAULT_P2P_SEARCH_DELAY)
 		fprintf(f, "p2p_search_delay=%u\n",
 			config->p2p_search_delay);
+
+	if (config->user_mpm)
+		fprintf(f, "user_mpm=%d\n", config->user_mpm);
 }
 
 #endif /* CONFIG_NO_CONFIG_WRITE */
diff --git a/wpa_supplicant/config_ssid.h b/wpa_supplicant/config_ssid.h
index 394a956..daa7ce3 100644
--- a/wpa_supplicant/config_ssid.h
+++ b/wpa_supplicant/config_ssid.h
@@ -654,6 +654,14 @@ struct wpa_ssid {
 #ifdef CONFIG_HS20
 	int update_identifier;
 #endif /* CONFIG_HS20 */
+
+	/**
+	 * no_auto_peer - Do not automatically peer with compatible mesh peers
+	 *
+	 * When unset, the reception of a beacon from a another mesh peer in
+	 * this MBSS will trigger a peering attempt.
+	 */
+	int no_auto_peer;
 };
 
 #endif /* CONFIG_SSID_H */
diff --git a/wpa_supplicant/ctrl_iface.c b/wpa_supplicant/ctrl_iface.c
index f612b49..9736192 100644
--- a/wpa_supplicant/ctrl_iface.c
+++ b/wpa_supplicant/ctrl_iface.c
@@ -2556,6 +2556,8 @@ static int wpa_supplicant_ctrl_iface_update_network(
 		wpa_config_update_psk(ssid);
 	else if (os_strcmp(name, "priority") == 0)
 		wpa_config_update_prio_list(wpa_s->conf);
+	else if (os_strcmp(name, "no_auto_peer") == 0)
+		ssid->no_auto_peer = atoi(value);
 
 	return 0;
 }
diff --git a/wpa_supplicant/mesh_mpm.c b/wpa_supplicant/mesh_mpm.c
index 4513709..d8fae01 100644
--- a/wpa_supplicant/mesh_mpm.c
+++ b/wpa_supplicant/mesh_mpm.c
@@ -348,6 +348,7 @@ wpa_mesh_new_mesh_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
 	struct mesh_conf *conf = wpa_s->ifmsh->mconf;
 	struct hostapd_data *data = wpa_s->ifmsh->bss[0];
 	struct sta_info *sta;
+	struct wpa_ssid *ssid = wpa_s->current_ssid;
 	int ret = 0;
 
 	sta = ap_get_sta(data, addr);
@@ -389,6 +390,12 @@ wpa_mesh_new_mesh_peer(struct wpa_supplicant *wpa_s, const u8 *addr,
 		return;
 	}
 
+	if (ssid && ssid->no_auto_peer) {
+		wpa_msg(wpa_s, MSG_INFO, "will not initiate new peer link with "
+			MACSTR " because of no_auto_peer", MAC2STR(addr));
+		return;
+	}
+
 	mesh_mpm_plink_open(wpa_s, sta, PLINK_OPEN_SENT);
 }
 
-- 
2.0.0.rc2