🐤 Sync 2026-10-03 00:12:36

luci-app-linkback/htdocs/luci-static/resources/view/linkback/overview.js

@@ -49,10 +49,10 @@ return view.extend({
 
 		var container = E('div', { 'class': 'cbi-map' }, [
 			E('h2', {}, _('LinkBack 链路守护') + ' - ' + _('Overview')),
-			E('div', { 'class': 'cbi-map-descr' }, _('Real-time health state, priority mapping, and service control for Multi-WAN default routing metrics.'))
+			E('div', { 'class': 'cbi-map-descr' }, _('Real-time health state, priority mapping, and service control for Multi-WAN / Multi-Gateway failover.'))
 		]);
 
-		// --- Service Status Section (Aligned with lucky style) ---
+		// --- Service Status Section ---
 		var stateText = _('Collecting...');
 		var stateColor = '#999';
 
@@ -84,15 +84,19 @@ return view.extend({
 								click: ui.createHandlerFn(this, 'handleServiceAction', 'restart')
 							}, _('Restart'))
 						])
+					]),
+					E('tr', { 'class': 'tr' }, [
+						E('td', { 'class': 'td left', 'width': '33%' }, _('Working Mode')),
+						E('td', { 'class': 'td left', 'id': 'linkback-service-mode' }, '-')
 					])
 				])
 			])
 		]);
 		container.appendChild(statusSection);
 
-		// --- Link Status Section (Aligned with lucky style) ---
+		// --- Link Status Section ---
 		var linkSection = E('fieldset', { 'class': 'cbi-section' }, [
-			E('legend', {}, _('Link Status')),
+			E('legend', {}, _('Link / Gateway Status')),
 			E('div', { 'class': 'cbi-section-node' }, [
 				E('div', { id: 'linkback-status-box' }, [
 					E('p', { 'class': 'spinning' }, _('Loading real-time link status...'))
@@ -131,6 +135,16 @@ return view.extend({
 			}
 		}
 
+		// Update mode indicator
+		var modeEl = document.getElementById('linkback-service-mode');
+		if (modeEl && status) {
+			if (status.mode === 'multi_gw') {
+				modeEl.textContent = _('单wan多网关模式') + ' (' + _('wan网络接口') + ': ' + (status.interface || 'wan') + ')';
+			} else {
+				modeEl.textContent = _('多wan口模式');
+			}
+		}
+
 		var restartBtn = document.getElementById('linkback-restart-btn');
 		if (restartBtn) {
 			if (status && status.links && status.links.length > 0) {
@@ -143,7 +157,7 @@ return view.extend({
 		if (!status || !status.links || status.links.length === 0) {
 			dom.content(box, [
 				E('p', { style: 'color:#f44336; font-weight:bold; padding:20px;' },
-					_('LinkBack daemon is not running or no links are configured. Please check Settings page.'))
+					_('LinkBack daemon is not running or no targets are configured. Please check Settings page.'))
 			]);
 			return;
 		}
@@ -154,7 +168,7 @@ return view.extend({
 		var table = E('table', { 'class': 'table cbi-section-table' }, [
 			E('tr', { 'class': 'tr table-titles' }, [
 				E('th', { 'class': 'th', 'style': 'text-align:center; width:5%;' }, '#'),
-				E('th', { 'class': 'th', 'style': 'text-align:left;' }, _('Link Name')),
+				E('th', { 'class': 'th', 'style': 'text-align:left;' }, _('Target / Interface')),
 				E('th', { 'class': 'th', 'style': 'text-align:left;' }, _('Status')),
 				E('th', { 'class': 'th', 'style': 'text-align:left;' }, _('Routing Attributes')),
 				E('th', { 'class': 'th', 'style': 'text-align:left;' }, _('Latency Details'))

luci-app-linkback/htdocs/luci-static/resources/view/linkback/settings.js

@@ -8,42 +8,70 @@ return view.extend({
 	load: function() {
 		return Promise.all([
 			uci.load('linkback'),
-			uci.load('network')
+			uci.load('network'),
+			uci.load('firewall').catch(function() { return {}; })
 		]);
 	},
 
 	// Comprehensive validation: check all conditions required for the service
 	// to be safely enabled. Returns an error message string, or null if OK.
 	_validateServiceConfig: function() {
+		var global_sec = uci.sections('linkback', 'global')[0] || {};
+		var mode = global_sec.mode || 'multi_wan';
 		var link_sections = uci.sections('linkback', 'link') || [];
 
-		// Rule 1: At least 2 interfaces
+		// Rule 1: At least 2 targets
 		if (link_sections.length < 2) {
-			return _('Cannot enable service: At least 2 monitored WAN interfaces must be configured for failover switcher.');
+			return _('Cannot enable service: At least 2 monitored links/gateways must be configured for failover switcher.');
 		}
 
-		// Rule 2: ALL interfaces must have a health check configured
+		if (mode === 'multi_gw') {
+			var iface = global_sec.interface || 'wan';
+			if (!iface) {
+				return _('Cannot enable service: WAN interface must be configured in Multi-Gateway mode.');
+			}
+		}
+
+		// Rule 2: ALL targets must have a health check configured
+		var priorities = {};
+		var gateways = {};
+		var names = {};
+
 		for (var i = 0; i < link_sections.length; i++) {
 			var s_id = link_sections[i]['.name'];
-			var iface_name = uci.get('linkback', s_id, 'name') || s_id;
+			var target_name = uci.get('linkback', s_id, 'name') || s_id;
+			var gw = uci.get('linkback', s_id, 'gateway');
+			var prio = uci.get('linkback', s_id, 'priority') || '1';
+
 			var has_check = uci.get('linkback', s_id, 'ping_targets') ||
 			                uci.get('linkback', s_id, 'dns_server') ||
 			                uci.get('linkback', s_id, 'tcp_target');
 			if (!has_check) {
-				return _('Cannot enable service: Interface "%s" has no health check configured.').format(iface_name);
+				return _('Cannot enable service: Target "%s" has no health check configured.').format(target_name);
 			}
-		}
 
-		// Rule 3: No duplicate priorities
-		var priorities = {};
-		for (var i = 0; i < link_sections.length; i++) {
-			var s_id = link_sections[i]['.name'];
-			var iface_name = uci.get('linkback', s_id, 'name') || s_id;
-			var prio = uci.get('linkback', s_id, 'priority') || '1';
+			// Priority uniqueness
 			if (priorities[prio]) {
-				return _('Cannot enable service: Interfaces "%s" and "%s" have the same priority %s.').format(priorities[prio], iface_name, prio);
+				return _('Cannot enable service: Targets "%s" and "%s" have the same priority %s.').format(priorities[prio], target_name, prio);
+			}
+			priorities[prio] = target_name;
+
+			// Mode specific checks
+			if (mode === 'multi_gw') {
+				var ipPattern = /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/;
+				if (!gw || !ipPattern.test(gw)) {
+					return _('Cannot enable service: Target "%s" has an invalid or missing Gateway IP.').format(target_name);
+				}
+				if (gateways[gw]) {
+					return _('Cannot enable service: Targets "%s" and "%s" have the same Gateway IP %s.').format(gateways[gw], target_name, gw);
+				}
+				gateways[gw] = target_name;
+			} else {
+				if (names[target_name]) {
+					return _('Cannot enable service: Interface "%s" is configured multiple times.').format(target_name);
+				}
+				names[target_name] = true;
 			}
-			priorities[prio] = iface_name;
 		}
 
 		return null;
@@ -53,11 +81,48 @@ return view.extend({
 		var m, s, o;
 		var self = this;
 
+		var getActiveMode = function() {
+			var global_sec = uci.sections('linkback', 'global')[0] || {};
+			var sid = global_sec['.name'] || '@global[0]';
+			var sel = document.querySelector('[name="cbid.linkback.' + sid + '.mode"]') ||
+			          document.querySelector('select[id*="mode"], select[name*="mode"]');
+			if (sel && sel.value) {
+				return sel.value;
+			}
+			return uci.get('linkback', sid, 'mode') || 'multi_wan';
+		};
+
+		var current_mode = getActiveMode();
+
+		// 智能提取 firewall 中 wan 区域关联的所有网络接口
+		var wan_interfaces = {};
+		var has_wan_zone = false;
+		uci.sections('firewall', 'zone').forEach(function(sec) {
+			if (sec.name === 'wan') {
+				has_wan_zone = true;
+				var nets = sec.network;
+				if (Array.isArray(nets)) {
+					nets.forEach(function(n) { if (n) wan_interfaces[n] = true; });
+				} else if (typeof(nets) === 'string') {
+					nets.split(/\s+/).forEach(function(n) { if (n) wan_interfaces[n] = true; });
+				}
+			}
+		});
+
+		// 若未配置 wan 区域，则安全回退至系统非回环非 lan 接口
+		if (!has_wan_zone || Object.keys(wan_interfaces).length === 0) {
+			uci.sections('network', 'interface').forEach(function(sec) {
+				var n = sec['.name'];
+				if (n !== 'loopback' && n !== 'lan') {
+					wan_interfaces[n] = true;
+				}
+			});
+		}
+
 		// 智能判断当前是否为中文环境，并提供实时校验的翻译 fallback
 		var is_zh = (_('Base Metric') === '默认跃点' || _('Base Metric') === '默认跃点 (Metric)');
 		var t_priority_empty = is_zh ? '优先级不能为空。' : _('Priority must not be empty.');
-		var t_priority_conflict = is_zh ? '优先级 %s 与接口 "%s" 冲突。优先级必须是唯一的。' : _('Priority %s conflicts with interface "%s". Priorities must be unique.');
-
+		var t_priority_conflict = is_zh ? '优先级 %s 与其他目标冲突。优先级必须是唯一的。' : _('Priority %s conflicts with another target. Priorities must be unique.');
 
 		// Helper function to expand table column controls and eliminate right empty space
 		var makeTableColumnExpand = function(opt, width) {
@@ -81,17 +146,16 @@ return view.extend({
 
 		m = new form.Map('linkback',
 			_('LinkBack 链路守护') + ' - ' + _('Settings'),
-			_('Configure Multi-WAN failover service, health check parameters, and monitored link interfaces.'));
+			_('Configure Multi-WAN / Multi-Gateway failover service, shared health check parameters, and monitored targets.'));
 
 		// --- Global Settings Section ---
 		s = m.section(form.TypedSection, 'global', _('Global Settings'));
 		s.anonymous = true;
 
-		// Enable switch (总开关) - must be the first option
+		// 1. Enable switch
 		o = s.option(form.Flag, 'enabled', _('Enable Service'),
 			_('Master switch to enable or disable the LinkBack failover daemon.'));
 		o.rmempty = false;
-		// Intercept at UCI write level to validate before enabling.
 		o.write = function(section_id, value) {
 			if (value === '1') {
 				var err = self._validateServiceConfig();
@@ -104,27 +168,94 @@ return view.extend({
 			uci.set('linkback', section_id, 'enabled', value);
 		};
 
-		// --- Monitored Links Section ---
-		s = m.section(form.GridSection, 'link', _('Monitored WAN Interfaces'),
-			_('Add and prioritize your WAN interfaces. Lower priority number means higher preference (e.g., 1 = primary, 2 = backup).'));
+		// 2. Working Mode
+		o = s.option(form.ListValue, 'mode', _('Working Mode'),
+			_('Choose failover mode: Multi-WAN interface failover or Single-WAN multi-gateway redundancy.'));
+		o.value('multi_wan', _('多wan口模式'));
+		o.value('multi_gw', _('单wan多网关模式'));
+		o.default = 'multi_wan';
+		o.rmempty = false;
+		o.onchange = function(ev, section_id, value) {
+			uci.set('linkback', section_id, 'mode', value);
+			var links = uci.sections('linkback', 'link') || [];
+			if (links.length > 0) {
+				if (value === 'multi_gw') {
+					ui.addNotification(null, E('p',
+						_('已切换为单wan多网关模式。请确保监控目标列表中配置了有效的网关 IP。')
+					), 'info');
+				} else {
+					ui.addNotification(null, E('p',
+						_('已切换为多wan口模式。请确保监控目标列表中选择了正确的 WAN 接口。')
+					), 'info');
+				}
+			}
+		};
+
+		// 3. WAN Interface in Multi-Gateway mode
+		o = s.option(form.ListValue, 'interface', _('wan网络接口'),
+			_('选择存在多个wan网关的接口'));
+		o.default = 'wan';
+		o.rmempty = false;
+		o.depends('mode', 'multi_gw');
+
+		Object.keys(wan_interfaces).forEach(function(iface) {
+			o.value(iface);
+		});
+
+		// 4. Global Shared Health Check & Failover Parameters (共用调度超时)
+		o = s.option(form.Value, 'check_interval', _('Check Interval (s)'),
+			_('Shared interval in seconds between health check cycles for all targets.'));
+		o.datatype = 'uinteger';
+		o.default = '5';
+		o.rmempty = false;
+
+		o = s.option(form.Value, 'check_timeout', _('Check Timeout (s)'),
+			_('Shared maximum wait time in seconds for each probe (1s recommended to prevent blocking).'));
+		o.datatype = 'uinteger';
+		o.default = '1';
+		o.rmempty = false;
+
+		o = s.option(form.Value, 'recovery_delay', _('Recovery Delay'),
+			_('Number of consecutive successful checks required before marking link as recovered (failback anti-flap).'));
+		o.datatype = 'uinteger';
+		o.default = '3';
+		o.rmempty = false;
+
+		o = s.option(form.Value, 'failover_delay', _('Failover Delay'),
+			_('Number of consecutive failed checks required before marking link as faulted (failover anti-flap).'));
+		o.datatype = 'uinteger';
+		o.default = '2';
+		o.rmempty = false;
+
+		// --- Monitored Targets Section ---
+		s = m.section(form.GridSection, 'link', _('Monitored Targets'),
+			_('Configure monitored WAN interfaces or next-hop gateways with custom probe targets and priorities (1 = primary, 2 = backup).'));
 		s.anonymous = true;
 		s.addremove = true;
 
-		// Custom dynamic Modal title for gorgeous UX
+		// Custom dynamic Modal title
 		s.modaltitle = function(section_id) {
 			var parent_title = _('LinkBack 链路守护') + ' - ' + _('Settings');
-			var is_new = (this.map.addedSection === section_id) || !uci.get('linkback', section_id, 'name');
-			if (is_new) {
-				return parent_title + ' - ' + _('Add Monitored Interface');
+			var mode = getActiveMode();
+			var is_new = (this.map.addedSection === section_id) ||
+			             (mode === 'multi_gw' ? !uci.get('linkback', section_id, 'gateway') : !uci.get('linkback', section_id, 'name'));
+			if (mode === 'multi_gw') {
+				if (is_new) {
+					return parent_title + ' - ' + _('Add Monitored Gateway');
+				} else {
+					var gw = uci.get('linkback', section_id, 'gateway') || uci.get('linkback', section_id, 'name') || section_id;
+					return parent_title + ' - ' + _('Edit Monitored Gateway') + ' (' + gw + ')';
+				}
 			} else {
-				var name = uci.get('linkback', section_id, 'name') || section_id;
-				return parent_title + ' - ' + _('Edit Monitored Interface') + ' (' + name + ')';
+				if (is_new) {
+					return parent_title + ' - ' + _('Add Monitored WAN Interface');
+				} else {
+					var iface = uci.get('linkback', section_id, 'name') || section_id;
+					return parent_title + ' - ' + _('Edit Monitored WAN Interface') + ' (' + iface + ')';
+				}
 			}
 		};
 
-		// When service is already enabled and user modifies/deletes links,
-		// re-validate on the GridSection level. If the resulting config is invalid,
-		// show a warning and auto-disable the service to maintain safety.
 		var origRemove = s.handleRemove;
 		s.handleRemove = function(section_id, ev) {
 			return origRemove.apply(this, arguments).then(function() {
@@ -141,78 +272,147 @@ return view.extend({
 			});
 		};
 
-		// 1. Enabled (Enabled as the first column)
+		// 1. Enabled
 		o = s.option(form.Flag, 'enabled', _('Enabled'));
 		o.default = '1';
 		o.rmempty = false;
 		makeTableColumnExpand(o, '8%');
 
-		// 2. Interface name - dynamic dropdown (No description for main column)
-		o = s.option(form.ListValue, 'name', _('Interface'));
-		o.rmempty = false;
-
-		// Once-off load of all network interfaces safely avoiding race conditions
-		var network_interfaces = {};
-		uci.sections('network', 'interface').forEach(function(sec) {
-			var n = sec['.name'];
-			if (n !== 'loopback' && n !== 'lan') {
-				network_interfaces[n] = true;
-				o.value(n);
-			}
-		});
-
-		// Safeguard to show already configured interfaces even if they were deleted from network config
-		uci.sections('linkback', 'link').forEach(function(sec) {
-			if (sec.name && !network_interfaces[sec.name]) {
-				o.value(sec.name, _('%s (configured)').format(sec.name));
-			}
-		});
-
-		// 动态隐藏已被配置的接口：通过在 renderWidget 中进行局部变量过滤与实例化 ui.Select，
-		// 完全不修改全局的 this.keylist 和 this.keyvalues，保证 100% 线程安全和无副作用
-		o.renderWidget = function(section_id, option_index, cfgvalue) {
-			// 找出已经被其他 Section 选中的网卡（已配置接口名）
-			var used_names = {};
-			uci.sections('linkback', 'link').forEach(function(sec) {
-				if (sec['.name'] !== section_id && sec.name) {
-					used_names[sec.name] = true;
+		// 2. Monitored Target Display (Table only)
+		o = s.option(form.DummyValue, '_target_disp', _('Monitored Target'));
+		o.modalonly = false;
+		o.cfgvalue = function(section_id) {
+			var gw = uci.get('linkback', section_id, 'gateway');
+			var name = uci.get('linkback', section_id, 'name');
+			var mode = getActiveMode();
+			if (mode === 'multi_gw' || gw) {
+				if (gw) {
+					if (name && name !== gw) {
+						return gw + ' (' + name + ')';
+					}
+					return gw;
 				}
-			});
+				return name ? (_('Missing Gateway IP: %s').format(name)) : _('Unset');
+			} else {
+				return name || _('Unselected');
+			}
+		};
+		makeTableColumnExpand(o, '24%');
 
-			// 动态生成仅针对当前渲染 section_id 的 choices 和 keylist
-			var filtered_choices = {};
-			var filtered_keylist = [];
-			if (Array.isArray(this.keylist)) {
-				for (var i = 0; i < this.keylist.length; i++) {
-					var key = this.keylist[i];
-					if (!used_names[key]) {
-						filtered_keylist.push(key);
-						filtered_choices[key] = this.vallist[i];
+		// 3a. Gateway IP (Multi-GW mode only, Modal only)
+		var o_gw = s.option(form.Value, 'gateway', _('Gateway IP'),
+			_('Next-hop IPv4 address of this gateway (e.g. 192.168.1.254).'));
+		o_gw.datatype = 'ip4addr';
+		o_gw.modalonly = true;
+		o_gw.placeholder = '192.168.1.254';
+		var origRenderGw = o_gw.render;
+		o_gw.render = function(option_index, section_id, in_table) {
+			if (getActiveMode() !== 'multi_gw') {
+				return Promise.resolve(E('div', { 'style': 'display: none !important;' }));
+			}
+			return origRenderGw.call(this, option_index, section_id, in_table);
+		};
+		o_gw.validate = function(section_id, value) {
+			if (getActiveMode() !== 'multi_gw') {
+				return true;
+			}
+			if (!value || value.trim() === '') {
+				return _('Gateway IP is required.');
+			}
+			var val = value.trim();
+			var self_opt = this;
+			var conflict = false;
+			uci.sections('linkback', 'link').forEach(function(sec) {
+				var sid = sec['.name'];
+				if (sid !== section_id) {
+					var other_gw = self_opt.formvalue(sid) || uci.get('linkback', sid, 'gateway');
+					if (other_gw && other_gw === val) {
+						conflict = true;
 					}
 				}
-			}
-
-			// 判断当前是编辑已有配置还是添加新配置
-			// 如果在 UCI 中已经保存了 name，则是编辑状态，此时网卡不可编辑
-			var is_edit = !!uci.get('linkback', section_id, 'name');
-
-			// 直接在局部变量中实例化 ui.Select，避免任何时序与引用问题
-			var widget = new ui.Select((cfgvalue != null) ? cfgvalue : this.default, filtered_choices, {
-				id: this.cbid(section_id),
-				size: this.size,
-				sort: filtered_keylist,
-				widget: this.widget,
-				optional: this.optional,
-				orientation: this.orientation,
-				placeholder: this.placeholder,
-				validate: (typeof(this.getValidator) === 'function') ? this.getValidator(section_id) : (this.validate ? this.validate.bind(this, section_id) : null),
-				disabled: is_edit ? true : ((this.readonly != null) ? this.readonly : this.map.readonly)
 			});
-
-			return widget.render();
+			if (conflict) {
+				return _('Gateway IP %s is already used by another link.').format(val);
+			}
+			return true;
+		};
+		o_gw.write = function(section_id, value) {
+			if (getActiveMode() === 'multi_gw') {
+				if (value != null && value.trim() !== '') {
+					uci.set('linkback', section_id, 'gateway', value.trim());
+				} else {
+					uci.remove('linkback', section_id, 'gateway');
+				}
+			} else {
+				uci.remove('linkback', section_id, 'gateway');
+			}
 		};
 
-		o.validate = function(section_id, value) {
+		// 3b. Gateway Alias (Multi-GW mode only, Modal only)
+		var o_alias = s.option(form.Value, 'name_alias', _('Gateway Alias (Optional)'),
+			_('Descriptive alias for this gateway (e.g. Bypass_GW, Main_Router). If empty, Gateway IP will be used.'));
+		o_alias.modalonly = true;
+		o_alias.placeholder = 'Bypass_GW';
+		var origRenderAlias = o_alias.render;
+		o_alias.render = function(option_index, section_id, in_table) {
+			if (getActiveMode() !== 'multi_gw') {
+				return Promise.resolve(E('div', { 'style': 'display: none !important;' }));
+			}
+			return origRenderAlias.call(this, option_index, section_id, in_table);
+		};
+		o_alias.cfgvalue = function(section_id) {
+			if (getActiveMode() === 'multi_gw') {
+				var gw = uci.get('linkback', section_id, 'gateway');
+				var name = uci.get('linkback', section_id, 'name');
+				if (name && name !== gw) {
+					return name;
+				}
+			}
+			return '';
+		};
+		o_alias.write = function(section_id, value) {
+			if (getActiveMode() === 'multi_gw') {
+				var gw = uci.get('linkback', section_id, 'gateway');
+				if (!value || value.trim() === '') {
+					uci.set('linkback', section_id, 'name', gw || section_id);
+				} else {
+					uci.set('linkback', section_id, 'name', value.trim());
+				}
+			}
+		};
+
+		// 3c. WAN Interface (Multi-WAN mode only, Modal only)
+		var o_iface = s.option(form.ListValue, 'name_iface', _('WAN Interface'),
+			_('Logical interface from firewall WAN zone.'));
+		o_iface.modalonly = true;
+		Object.keys(wan_interfaces).forEach(function(iface) {
+			o_iface.value(iface);
+		});
+		uci.sections('linkback', 'link').forEach(function(sec) {
+			if (sec.name && !wan_interfaces[sec.name]) {
+				o_iface.value(sec.name, _('%s (configured)').format(sec.name));
+			}
+		});
+		var origRenderIface = o_iface.render;
+		o_iface.render = function(option_index, section_id, in_table) {
+			if (getActiveMode() !== 'multi_wan') {
+				return Promise.resolve(E('div', { 'style': 'display: none !important;' }));
+			}
+			return origRenderIface.call(this, option_index, section_id, in_table);
+		};
+		o_iface.cfgvalue = function(section_id) {
+			if (getActiveMode() === 'multi_wan') {
+				return uci.get('linkback', section_id, 'name');
+			}
+			return null;
+		};
+		o_iface.validate = function(section_id, value) {
+			if (getActiveMode() !== 'multi_wan') {
+				return true;
+			}
+			if (!value) {
+				return _('WAN Interface is required.');
+			}
 			var added = false;
 			uci.sections('linkback', 'link').forEach(function(sec) {
 				if (sec['.name'] !== section_id && sec.name === value) {
@@ -224,11 +424,16 @@ return view.extend({
 			}
 			return true;
 		};
+		o_iface.write = function(section_id, value) {
+			if (getActiveMode() === 'multi_wan') {
+				uci.set('linkback', section_id, 'name', value);
+				uci.remove('linkback', section_id, 'gateway');
+			}
+		};
 
-		makeTableColumnExpand(o, '25%');
-
-		// 3. Priority (No description for main column)
-		o = s.option(form.Value, 'priority', _('Priority'));
+		// 3. Priority
+		o = s.option(form.Value, 'priority', _('Priority'),
+			_('Lower number indicates higher priority (e.g. 1 = Primary, 2 = Backup).'));
 		o.datatype = 'uinteger';
 		o.default = '1';
 		o.rmempty = false;
@@ -238,7 +443,6 @@ return view.extend({
 			}
 			var self_opt = this;
 			var has_conflict = false;
-			var conflicting_iface = '';
 			uci.sections('linkback', 'link').forEach(function(sec) {
 				var sid = sec['.name'];
 				if (sid !== section_id) {
@@ -248,16 +452,15 @@ return view.extend({
 					}
 					if (other_val != null && other_val !== '' && String(other_val) === String(value)) {
 						has_conflict = true;
-						conflicting_iface = uci.get('linkback', sid, 'name') || sid;
 					}
 				}
 			});
 			if (has_conflict) {
-				return t_priority_conflict.format(value, conflicting_iface);
+				return t_priority_conflict.format(value);
 			}
 			return true;
 		};
-		makeTableColumnExpand(o, '15%');
+		makeTableColumnExpand(o, '12%');
 
 		// 4. Metric (Read-only, generated from priority * 10)
 		var metric_title = _('Base Metric');
@@ -273,7 +476,7 @@ return view.extend({
 			}
 			return prio_val * 10;
 		};
-		makeTableColumnExpand(o, '15%');
+		makeTableColumnExpand(o, '12%');
 
 		// 5. Dummy display option for Check Type in main Grid table (read-only)
 		o = s.option(form.DummyValue, 'check_type_disp', _('Check Type'));
@@ -287,10 +490,11 @@ return view.extend({
 				return _('TCP Probe');
 			return _('-- Not Configured --');
 		};
-		makeTableColumnExpand(o, '20%');
+		makeTableColumnExpand(o, '18%');
 
-		// 6. Check Type Dropdown (Virtual field, Modal only to avoid Save & Apply side-effects)
-		o = s.option(form.ListValue, 'check_type', _('Check Type'));
+		// 6. Check Type Dropdown (Virtual field, Modal only)
+		o = s.option(form.ListValue, 'check_type', _('Check Type'),
+			_('Health probe method for this specific target.'));
 		o.value('ping', _('Ping Probe'));
 		o.value('dns', _('DNS Probe'));
 		o.value('tcp', _('TCP Probe'));
@@ -298,7 +502,6 @@ return view.extend({
 		o.rmempty = false;
 		o.modalonly = true;
 
-		// Derive the check type from which probe target is configured in UCI.
 		o.cfgvalue = function(section_id) {
 			if (uci.get('linkback', section_id, 'ping_targets'))
 				return 'ping';
@@ -306,22 +509,19 @@ return view.extend({
 				return 'dns';
 			if (uci.get('linkback', section_id, 'tcp_target'))
 				return 'tcp';
-			return 'ping'; // Default to ping if not configured
+			return 'ping';
 		};
 
-		// Only write when the check type actually CHANGES from the current state.
 		o.write = function(section_id, value) {
 			var current = uci.get('linkback', section_id, 'ping_targets') ? 'ping' :
 			              (uci.get('linkback', section_id, 'dns_server') ? 'dns' :
 			              (uci.get('linkback', section_id, 'tcp_target') ? 'tcp' : ''));
 			var next = (value == null) ? 'ping' : String(value);
 
-			// No change - do nothing
 			if (next === current) {
 				return;
 			}
 
-			// Clear old type's fields and any legacy weights/thresholds
 			uci.remove('linkback', section_id, 'weight_threshold');
 			uci.remove('linkback', section_id, 'ping_weight');
 			uci.remove('linkback', section_id, 'dns_weight');
@@ -340,14 +540,15 @@ return view.extend({
 			}
 		};
 
-		// 7. Ping Probe Parameters
+		// 7. Custom Ping Probe Parameters
 		o = s.option(form.Value, 'ping_targets', _('Ping Targets'),
-			_('Comma-separated list of IPs to ping (e.g., 223.5.5.5,8.8.8.8).'));
-		o.rmempty = true;
+			_('Custom IP list to ping through this link/gateway (comma-separated, e.g. 223.5.5.5,119.29.29.29).'));
+		o.default = '223.5.5.5,119.29.29.29';
+		o.rmempty = false;
 		o.modalonly = true;
 		o.depends('check_type', 'ping');
 		o.validate = function(section_id, value) {
-			if (!value) return true;
+			if (!value) return _('Ping Targets is required.');
 			var ips = value.replace(/\s+/g, '').split(',');
 			for (var i = 0; i < ips.length; i++) {
 				var ipPattern = /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/;
@@ -366,64 +567,38 @@ return view.extend({
 			}
 		};
 
-		// 7. DNS Probe Parameters
+		// 8. Custom DNS Probe Parameters
 		o = s.option(form.Value, 'dns_server', _('DNS Server'),
-			_('DNS server IP for UDP query probe (e.g., 119.29.29.29).'));
+			_('DNS server IP for UDP query probe (e.g. 119.29.29.29).'));
 		o.datatype = 'ip4addr';
-		o.rmempty = true;
+		o.rmempty = false;
 		o.modalonly = true;
 		o.depends('check_type', 'dns');
 
 		o = s.option(form.Value, 'dns_domain', _('DNS Domain'),
-			_('Domain name to resolve for DNS probe (e.g., www.baidu.com).'));
-		o.rmempty = true;
+			_('Domain name to resolve for DNS probe (e.g. www.baidu.com).'));
+		o.default = 'www.baidu.com';
+		o.rmempty = false;
 		o.modalonly = true;
 		o.depends('check_type', 'dns');
 
-		// 8. TCP Probe Parameters
+		// 9. Custom TCP Probe Parameters
 		o = s.option(form.Value, 'tcp_target', _('TCP Target'),
 			_('Target IP for TCP handshake probe.'));
 		o.datatype = 'ip4addr';
-		o.rmempty = true;
+		o.rmempty = false;
 		o.modalonly = true;
 		o.depends('check_type', 'tcp');
 
 		o = s.option(form.Value, 'tcp_port', _('TCP Port'),
-			_('Target port for TCP handshake probe.'));
+			_('Target port for TCP handshake probe (e.g. 80 or 443).'));
 		o.datatype = 'port';
-		o.rmempty = true;
+		o.default = '80';
+		o.rmempty = false;
 		o.modalonly = true;
 		o.depends('check_type', 'tcp');
 
-		// 9. Individual health check options (Modal only)
-		o = s.option(form.Value, 'check_interval', _('Check Interval (s)'),
-			_('Time in seconds between each health check cycle for this link.'));
-		o.datatype = 'uinteger';
-		o.default = '5';
-		o.rmempty = false;
-		o.modalonly = true;
-
-		o = s.option(form.Value, 'check_timeout', _('Check Timeout (s)'),
-			_('Maximum wait time in seconds for each individual check probe for this link.'));
-		o.datatype = 'uinteger';
-		o.default = '3';
-		o.rmempty = false;
-		o.modalonly = true;
-
-		o = s.option(form.Value, 'recovery_delay', _('Recovery Delay'),
-			_('Number of consecutive successful checks required before marking this link as healthy (failback anti-flap).'));
-		o.datatype = 'uinteger';
-		o.default = '3';
-		o.rmempty = false;
-		o.modalonly = true;
-
-		o = s.option(form.Value, 'failover_delay', _('Failover Delay'),
-			_('Number of consecutive failed checks required before marking this link as faulted (failover anti-flap).'));
-		o.datatype = 'uinteger';
-		o.default = '2';
-		o.rmempty = false;
-		o.modalonly = true;
-
+		// 提示：超时与防抖延迟由全局配置统一管理，子项完全无需重复配置
 		return m.render();
 	}
 });