wifi-2075- Fix for inconsistency in applying vif configuration

- During the configuration process, AP was triggering network
   and wireless reload multiple times in a very short window
   resulting in a poorly configured hostapd. This patch makes sure
   that network/wireless is reloaded only once after all the configuration
   is committed to UCI files.

Signed-off-by: Yashvardhan <yashvardhan@netexperience.com>

feeds/wlan-ap/opensync/src/platform/openwrt/src/command/src/node_config.c

@@ -159,7 +159,6 @@ static void syslog_handler(int type,
 	blob_to_uci_section(uci, "system", "@system[-1]", "system",
 			    b.head, &log_param, NULL);
 	uci_commit_all(uci);
-	system("/sbin/reload_config");
 	if (del)
 		node_state_del("syslog");
 	else
@@ -252,7 +251,6 @@ static void ntp_handler(int type,
 	blob_to_uci_section(uci, "system", "ntp", "timeserver",
 			    b.head, &ntp_param, NULL);
 	uci_commit_all(uci);
-	system("/sbin/reload_config");
 	ntp_state(0);
 }
 
@@ -376,7 +374,6 @@ static void led_handler(int type,
 		globfree(&gl);
 	}
 	uci_commit_all(uci);
-	system("/sbin/reload_config");
 	led_state(0);
 }
 

feeds/wlan-ap/opensync/src/platform/openwrt/src/lib/target/inc/radio.h

@@ -3,6 +3,10 @@
 #ifndef _RADIO_H__
 #define _RADIO_H__
 
+#include "ovsdb_update.h"
+
+#define CONFIG_APPLY_TIMEOUT 35
+
 struct rrm_neighbor {
 	char *mac;
 	char *ssid;
@@ -10,7 +14,6 @@ struct rrm_neighbor {
 };
 
 extern const struct target_radio_ops *radio_ops;
-extern int reload_config;
 extern struct blob_buf b;
 extern struct uci_context *uci;
 
@@ -22,5 +25,6 @@ extern int hapd_rrm_set_neighbors(char *name, struct rrm_neighbor *neigh, int co
 extern void radio_maverick(void *arg);
 
 int nl80211_channel_get(char *name, unsigned int *chan);
+void set_config_apply_timeout(ovsdb_update_monitor_t *mon);
 
 #endif

feeds/wlan-ap/opensync/src/platform/openwrt/src/lib/target/inc/timer.h

@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+
+#ifndef __TIMER_H__
+#define __TIMER_H__
+
+#include <sys/time.h>
+
+struct timeout;
+typedef void (*timeout_handler)(struct timeout *t);
+
+struct timeout {
+	bool pending;
+	timeout_handler cb;
+	struct timeval time;
+};
+
+int timeout_set(struct timeout *timeout, int msecs);
+void timer_expiry_check(struct timeout *timeout);
+
+#endif

feeds/wlan-ap/opensync/src/platform/openwrt/src/lib/target/override.mk

@@ -47,6 +47,7 @@ UNIT_SRC_TOP += $(OVERRIDE_DIR)/src/dhcpdiscovery.c
 UNIT_SRC_TOP += $(OVERRIDE_DIR)/src/radius_probe.c
 UNIT_SRC_TOP += $(OVERRIDE_DIR)/src/rrm_config.c
 UNIT_SRC_TOP += $(OVERRIDE_DIR)/src/radius_proxy.c
+UNIT_SRC_TOP += $(OVERRIDE_DIR)/src/timer.c
 
 CONFIG_USE_KCONFIG=y
 CONFIG_INET_ETH_LINUX=y

feeds/wlan-ap/opensync/src/platform/openwrt/src/lib/target/src/radio.c

@@ -27,6 +27,7 @@
 #include "rrm_config.h"
 #include "vlan.h"
 #include "radius_proxy.h"
+#include "timer.h"
 
 ovsdb_table_t table_Hotspot20_Config;
 ovsdb_table_t table_Hotspot20_OSU_Providers;
@@ -35,6 +36,10 @@ ovsdb_table_t table_Radius_Proxy_Config;
 
 ovsdb_table_t table_APC_Config;
 ovsdb_table_t table_APC_State;
+ovsdb_table_t table_Wifi_VIF_Config;
+ovsdb_table_t table_Wifi_Inet_Config;
+ovsdb_table_t table_Node_Config;
+
 unsigned int radproxy_apc = 0;
 extern json_t* ovsdb_table_where(ovsdb_table_t *table, void *record);
 
@@ -42,7 +47,6 @@ static struct uci_package *wireless;
 struct uci_context *uci;
 struct blob_buf b = { };
 struct blob_buf del = { };
-int reload_config = 0;
 static struct timespec startup_time;
 
 enum {
@@ -488,20 +492,14 @@ bool target_radio_config_set2(const struct schema_Wifi_Radio_Config *rconf,
 	blob_to_uci_section(uci, "wireless", rconf->if_name, "wifi-device",
 			    b.head, &wifi_device_param, del.head);
 
-	reload_config = 1;
-
+	uci_commit_all(uci);
 	return true;
 }
 
 static void periodic_task(void *arg)
 {
-	static int counter = 0;
-	struct uci_element *e = NULL, *tmp = NULL;
 	int ret = 0;
-
-	if ((counter % 15) && !reload_config)
-		goto done;
-
+	struct uci_element *e = NULL, *tmp = NULL;
 	if (startup_time.tv_sec) {
 		static struct timespec current_time;
 
@@ -512,20 +510,11 @@ static void periodic_task(void *arg)
 			radio_maverick(NULL);
 		}
 	}
-
-	if (reload_config) {
-		LOGD("periodic: reload_config");
-		reload_config = 0;
-		uci_commit_all(uci);
-		sync();
-		system("reload_config");
-	}
-
 	LOGD("periodic: start state update ");
 	ret = uci_load(uci, "wireless", &wireless);
 	if (ret) {
 		LOGE("%s: uci_load() failed with rc %d", __func__, ret);
-		return;
+		goto out;
 	}
 	uci_foreach_element_safe(&wireless->sections, tmp, e) {
 		struct uci_section *s = uci_to_section(e);
@@ -543,9 +532,8 @@ static void periodic_task(void *arg)
 	uci_unload(uci, wireless);
 	LOGD("periodic: stop state update ");
 
-done:
-	counter++;
-	evsched_task_reschedule_ms(EVSCHED_SEC(1));
+out:
+	evsched_task_reschedule_ms(EVSCHED_SEC(15));
 }
 
 bool target_radio_config_init2(void)
@@ -578,7 +566,6 @@ bool target_radio_config_init2(void)
 	}
 	if (invalidVifFound) {
 		uci_commit(uci, &wireless, false);
-		reload_config = 1;
 	}
 	uci_unload(uci, wireless);
 
@@ -661,6 +648,7 @@ void radio_maverick(void *arg)
 	uci_unload(uci, wireless);
 }
 
+
 static void callback_Hotspot20_Config(ovsdb_update_monitor_t *mon,
 				 struct schema_Hotspot20_Config *old,
 				 struct schema_Hotspot20_Config *conf)
@@ -680,6 +668,7 @@ static void callback_Hotspot20_Config(ovsdb_update_monitor_t *mon,
 		LOG(ERR, "Hotspot20_Config: unexpected mon_type %d %s", mon->mon_type, mon->mon_uuid);
 		break;
 	}
+	set_config_apply_timeout(mon);
 	return;
 }
 
@@ -703,6 +692,7 @@ static void callback_Hotspot20_OSU_Providers(ovsdb_update_monitor_t *mon,
 				mon->mon_type, mon->mon_uuid);
 		break;
 	}
+	set_config_apply_timeout(mon);
 	return;
 }
 
@@ -727,6 +717,7 @@ static void callback_Hotspot20_Icon_Config(ovsdb_update_monitor_t *mon,
 				mon->mon_type, mon->mon_uuid);
 		break;
 	}
+	set_config_apply_timeout(mon);
 	return;
 
 }
@@ -1032,6 +1023,51 @@ void apc_init()
 
 }
 
+static void apply_config_handler(struct timeout *timeout)
+{
+	uci_commit_all(uci);
+	sync();
+	LOGI("====Calling reload_config====");
+	system("/sbin/reload_config");
+}
+
+static struct timeout config_timer = {
+		.cb = apply_config_handler
+};
+
+static void config_timer_task(void *arg)
+{
+	timer_expiry_check(&config_timer);
+	evsched_task_reschedule_ms(EVSCHED_SEC(1));
+}
+
+void set_config_apply_timeout(ovsdb_update_monitor_t *mon)
+{
+	static bool firstconfig = true;
+	LOGI("=====Received config update - table:%s uuid:%s Action:%d======", mon->mon_table, mon->mon_uuid, mon->mon_type);
+	if(firstconfig) {
+		firstconfig = false;
+		timeout_set(&config_timer, CONFIG_APPLY_TIMEOUT * 1000);
+		evsched_task(&config_timer_task, NULL, EVSCHED_SEC(1));
+	} else {
+		timeout_set(&config_timer, CONFIG_APPLY_TIMEOUT * 1000);
+	}
+}
+
+static void callback_Wifi_Inet_Config(ovsdb_update_monitor_t *mon,
+		struct schema_Wifi_Inet_Config *old_rec,
+		struct schema_Wifi_Inet_Config *iconf)
+{
+	set_config_apply_timeout(mon);
+}
+
+static void callback_Node_Config(ovsdb_update_monitor_t *mon,
+		struct schema_Node_Config *old,
+		struct schema_Node_Config *conf)
+{
+	set_config_apply_timeout(mon);
+}
+
 bool target_radio_init(const struct target_radio_ops *ops)
 {
 	uci = uci_alloc_context();
@@ -1060,6 +1096,11 @@ bool target_radio_init(const struct target_radio_ops *ops)
 	OVSDB_TABLE_INIT(Radius_Proxy_Config, _uuid);
 	OVSDB_TABLE_MONITOR(Radius_Proxy_Config, false);
 
+	OVSDB_TABLE_INIT(Wifi_Inet_Config, _uuid);
+	OVSDB_TABLE_MONITOR(Wifi_Inet_Config, false);
+
+	OVSDB_TABLE_INIT(Node_Config, _uuid);
+	OVSDB_TABLE_MONITOR(Node_Config, false);
 
 	evsched_task(&periodic_task, NULL, EVSCHED_SEC(5));
 

feeds/wlan-ap/opensync/src/platform/openwrt/src/lib/target/src/radius_proxy.c

@@ -365,7 +365,6 @@ static bool radius_proxy_config_set(struct schema_Radius_Proxy_Config *conf)
 		blob_to_uci_section(uci, "radsecproxy", name, "realm",
 				uci_buf.head, &radius_proxy_realm_param, NULL);
 	}
-
 	uci_commit_all(uci);
 	return true;
 }
@@ -394,7 +393,6 @@ static bool radius_proxy_config_delete()
 	uci_commit(rad_uci, &radsecproxy, false);
 	uci_unload(rad_uci, radsecproxy);
 	uci_free_context(rad_uci);
-	reload_config = 1;
 	return true;
 }
 
@@ -419,7 +417,8 @@ void callback_Radius_Proxy_Config(ovsdb_update_monitor_t *self,
 		LOG(ERR, "Radius_Proxy_Config: unexpected mon_type %d %s",
 				self->mon_type, self->mon_uuid);
 		break;
-	}	
+	}
+	set_config_apply_timeout(self);
 	return;
 }
 

feeds/wlan-ap/opensync/src/platform/openwrt/src/lib/target/src/rrm_config.c

@@ -178,7 +178,8 @@ void callback_Wifi_RRM_Config(ovsdb_update_monitor_t *self,
 	default:
 		LOG(ERR, "Wifi_RRM_Config: unexpected mon_type %d %s", self->mon_type, self->mon_uuid);
 		break;
-	}	
+	}
+	set_config_apply_timeout(self);
 	return;
 }
 

feeds/wlan-ap/opensync/src/platform/openwrt/src/lib/target/src/timer.c

@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <time.h>
+
+#include "log.h"
+#include "evsched.h"
+
+#include "timer.h"
+
+static int tv_diff(struct timeval *t1, struct timeval *t2)
+{
+	return
+			(t1->tv_sec - t2->tv_sec) * 1000 +
+			(t1->tv_usec - t2->tv_usec) / 1000;
+}
+
+static void gettime(struct timeval *tv)
+{
+	struct timespec ts;
+
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	tv->tv_sec = ts.tv_sec;
+	tv->tv_usec = ts.tv_nsec / 1000;
+}
+
+int timeout_set(struct timeout *timeout, int msecs)
+{
+	if (!timeout) {
+		LOGE("%s No timer data", __func__);
+		return -1;
+	}
+	struct timeval *time = &timeout->time;
+
+	if (timeout->pending)
+		timeout->pending = false;
+
+	gettime(time);
+
+	time->tv_sec += msecs / 1000;
+	time->tv_usec += (msecs % 1000) * 1000;
+
+	if (time->tv_usec > 1000000) {
+		time->tv_sec++;
+		time->tv_usec -= 1000000;
+	}
+	timeout->pending = true;
+	return 0;
+}
+
+void timer_expiry_check(struct timeout *t)
+{
+	struct timeval tv;
+	gettime(&tv);
+	if (t->pending && tv_diff(&t->time, &tv) <= 0) {
+		t->pending = false;
+		LOGI("%s Timer Expired..Executing callback", __func__);
+		if (t->cb)
+			t->cb(t);
+	}
+}

feeds/wlan-ap/opensync/src/platform/openwrt/src/lib/target/src/vif.c

@@ -1034,7 +1034,8 @@ void vif_section_del(char *section_name)
 	ret= uci_load(sec_ctx, "wireless", &wireless);
 	if (ret) {
 		LOGE("%s: %s uci_load() failed with rc %d", section_name, __func__, ret);
-		uci_free_context(sec_ctx);
+		if (sec_ctx)
+			uci_free_context(sec_ctx);
 		return;
 	}
 	uci_foreach_element_safe(&wireless->sections, tmp, e) {
@@ -1049,8 +1050,8 @@ void vif_section_del(char *section_name)
 	}
 	uci_commit(sec_ctx, &wireless, false);
 	uci_unload(sec_ctx, wireless);
-	uci_free_context(sec_ctx);
-	reload_config = 1;
+	if (sec_ctx)
+		uci_free_context(sec_ctx);
 }
 
 void vif_check_radius_proxy()
@@ -1326,7 +1327,8 @@ bool target_vif_config_del(const struct schema_Wifi_VIF_Config *vconf)
 	ret= uci_load(vif_ctx, "wireless", &wireless);
 	if (ret) {
 		LOGE("%s: %s uci_load() failed with rc %d", vconf->if_name, __func__, ret);
-		uci_free_context(vif_ctx);
+		if (vif_ctx)
+			uci_free_context(vif_ctx);
 		return false;
 	}
 	uci_foreach_element_safe(&wireless->sections, tmp, e) {
@@ -1346,8 +1348,8 @@ bool target_vif_config_del(const struct schema_Wifi_VIF_Config *vconf)
 	}
 	uci_commit(vif_ctx, &wireless, false);
 	uci_unload(vif_ctx, wireless);
-	uci_free_context(vif_ctx);
-	reload_config = 1;
+	if (vif_ctx)
+		uci_free_context(vif_ctx);
 	return true;
 }
 
@@ -1402,7 +1404,7 @@ void vif_hs20_osu_update(struct schema_Hotspot20_OSU_Providers *osuconf)
 
 	blob_to_uci_section(uci, "wireless", osuconf->osu_provider_name, "osu-provider",
 			osu.head, &wifi_hs20_osu_param, NULL);
-	reload_config = 1;
+	uci_commit_all(uci);
 }
 
 
@@ -1433,7 +1435,7 @@ void vif_hs20_icon_update(struct schema_Hotspot20_Icon_Config *iconconf)
 
 		blob_to_uci_section(uci, "wireless", iconconf->icon_config_name, "hs20-icon",
 				hs20.head, &wifi_hs20_icon_param, NULL);
-		reload_config = 1;
+		uci_commit_all(uci);
 	}
 }
 
@@ -1456,9 +1458,9 @@ void vif_hs20_update(struct schema_Hotspot20_Config *hs2conf)
 			hs20_vif_config(&b, hs2conf);
 			blob_to_uci_section(uci, "wireless", vconf.if_name, "wifi-iface",
 					b.head, &wifi_iface_param, NULL);
-			reload_config = 1;
 		}
 	}
+	uci_commit_all(uci);
 }
 
 /* Mesh options table */
@@ -1526,8 +1528,7 @@ static int mesh_vif_config_set(const struct schema_Wifi_Radio_Config *rconf,
 	blobmsg_add_string(&mesh, "master", "bat0");
 	blob_to_uci_section(uci, "network", vconf->if_name, "interface",
 			mesh.head, &wifi_mesh_param, NULL);
-
-	reload_config = 1;
+	uci_commit_all(uci);
 	return 0;
 }
 
@@ -1646,8 +1647,7 @@ static int ap_vif_config_set(const struct schema_Wifi_Radio_Config *rconf,
 	{
 		vif_dhcp_opennds_allowlist_set(vconf,(char*)vconf->if_name);
 	}
-
-	reload_config = 1;
+	uci_commit_all(uci);
 	return 0;
 }
 

feeds/wlan-ap/opensync/src/platform/openwrt/src/netifd/src/wifi_inet_config.c

@@ -75,7 +75,6 @@ const struct uci_blob_param_list network_param = {
 	.params = network_policy,
 };
 
-int reload_config = 0;
 ovsdb_table_t table_Wifi_Inet_Config;
 struct blob_buf b = { };
 struct blob_buf del = { };
@@ -342,7 +341,6 @@ static int wifi_inet_conf_add(struct schema_Wifi_Inet_Config *iconf)
 	}
 
 	uci_commit_all(uci);
-	reload_config = 1;
 
 	return 0;
 }
@@ -361,7 +359,6 @@ static void wifi_inet_conf_del(struct schema_Wifi_Inet_Config *iconf)
 
 	uci_section_del(uci, "network", "network", iconf->if_name, "interface");
 	uci_commit_all(uci);
-	reload_config = 1;
 }
 
 static void callback_Wifi_Inet_Config(ovsdb_update_monitor_t *mon,
@@ -388,17 +385,6 @@ static void callback_Wifi_Inet_Config(ovsdb_update_monitor_t *mon,
 	return;
 }
 
-static void periodic_task(void *arg)
-{
-	if (reload_config) {
-		uci_commit_all(uci);
-		system("reload_config");
-		reload_config = 0;
-	}
-
-	evsched_task_reschedule_ms(EVSCHED_SEC(5));
-}
-
 void wifi_inet_config_init(void)
 {
 	struct uci_element *e = NULL;
@@ -418,7 +404,6 @@ void wifi_inet_config_init(void)
 	}
 	uci_unload(uci, network);
 	OVSDB_TABLE_MONITOR(Wifi_Inet_Config, false);
-	evsched_task(&periodic_task, NULL, EVSCHED_SEC(5));
 
 	return;
 }