mesh: Add user_mpm config option

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.

Signed-off-by: Javier Lopez <jlopex@gmail.com>
Signed-off-by: Jason Mobarak <x@jason.mobarak.name>
Signed-off-by: Thomas Pedersen <thomas@noack.us>

wpa_supplicant/config.c

@@ -3310,6 +3310,7 @@ 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;
@@ -3856,6 +3857,9 @@ 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 },

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
@@ -1100,6 +1101,16 @@ struct wpa_config {
 	 * rekeying operation.
 	 */
 	int key_mgmt_offload;
+
+	/**
+	 * 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;
 };
 
 

wpa_supplicant/config_file.c

@@ -1195,6 +1195,9 @@ static void wpa_config_write_global(FILE *f, struct wpa_config *config)
 
 	if (config->key_mgmt_offload != DEFAULT_KEY_MGMT_OFFLOAD)
 		fprintf(f, "key_mgmt_offload=%u\n", config->key_mgmt_offload);
+
+	if (config->user_mpm != DEFAULT_USER_MPM)
+		fprintf(f, "user_mpm=%d\n", config->user_mpm);
 }
 
 #endif /* CONFIG_NO_CONFIG_WRITE */

wpa_supplicant/wpa_supplicant.conf

@@ -114,6 +114,15 @@ eapol_version=1
 # networks are found, a new IBSS or AP mode network is created.
 ap_scan=1
 
+# MPM residency
+# By default, wpa_supplicant implements the mesh peering manager (MPM) for an
+# open mesh. However, if the driver can implement the MPM, you may set this to
+# 0 to use the driver version. When AMPE is enabled, the wpa_supplicant MPM is
+# always used.
+# 0: MPM lives in the driver
+# 1: wpa_supplicant provides an MPM which handles peering (default)
+#user_mpm=1
+
 # EAP fast re-authentication
 # By default, fast re-authentication is enabled for all EAP methods that
 # support it. This variable can be used to disable fast re-authentication.