platform: cleanup handling "window" for non-exclusive routes

src/platform/nm-linux-platform.c

@@ -2421,7 +2421,6 @@ static struct nl_msg *
 _nl_msg_new_route (int nlmsg_type,
                    int nlmsg_flags,
                    const NMPObject *obj,
-                   guint32 window,
                    guint32 cwnd,
                    guint32 initcwnd,
                    guint32 initrwnd,
@@ -2484,7 +2483,12 @@ _nl_msg_new_route (int nlmsg_type,
 	}
 
 	if (   obj->ip_route.mss
-	    || window || cwnd || initcwnd || initrwnd || mtu || lock) {
+	    || obj->ip_route.window
+	    || cwnd
+	    || initcwnd
+	    || initrwnd
+	    || mtu
+	    || lock) {
 		struct nlattr *metrics;
 
 		metrics = nla_nest_start (msg, RTA_METRICS);
@@ -2493,8 +2497,8 @@ _nl_msg_new_route (int nlmsg_type,
 
 		if (obj->ip_route.mss)
 			NLA_PUT_U32 (msg, RTAX_ADVMSS, obj->ip_route.mss);
-		if (window)
+		if (obj->ip_route.window)
-			NLA_PUT_U32 (msg, RTAX_WINDOW, window);
+			NLA_PUT_U32 (msg, RTAX_WINDOW, obj->ip_route.window);
 		if (cwnd)
 			NLA_PUT_U32 (msg, RTAX_CWND, cwnd);
 		if (initcwnd)
@@ -5712,7 +5716,6 @@ ip4_route_add (NMPlatform *platform, const NMPlatformIP4Route *route)
 	nlmsg = _nl_msg_new_route (RTM_NEWROUTE,
 	                           NLM_F_CREATE | NLM_F_REPLACE,
 	                           &obj,
-	                           route->window,
 	                           route->cwnd,
 	                           route->initcwnd,
 	                           route->initrwnd,
@@ -5737,7 +5740,6 @@ ip6_route_add (NMPlatform *platform, const NMPlatformIP6Route *route)
 	nlmsg = _nl_msg_new_route (RTM_NEWROUTE,
 	                           NLM_F_CREATE | NLM_F_REPLACE,
 	                           &obj,
-	                           route->window,
 	                           route->cwnd,
 	                           route->initcwnd,
 	                           route->initrwnd,
@@ -5797,7 +5799,6 @@ ip_route_delete (NMPlatform *platform,
 	                           0,
 	                           0,
 	                           0,
-	                           0,
 	                           0);
 	if (!nlmsg)
 		return FALSE;

src/platform/nm-platform.c

@@ -4756,6 +4756,7 @@ nm_platform_ip4_route_hash (const NMPlatformIP4Route *obj, NMPlatformIPRouteCmpT
 				h = NM_HASH_COMBINE (h, obj->gateway);
 				h = NM_HASH_COMBINE (h, obj->mss);
 				h = NM_HASH_COMBINE (h, obj->pref_src);
+				h = NM_HASH_COMBINE (h, obj->window);
 			}
 			break;
 		case NM_PLATFORM_IP_ROUTE_CMP_TYPE_SEMANTICALLY:
@@ -4813,6 +4814,7 @@ nm_platform_ip4_route_cmp (const NMPlatformIP4Route *a, const NMPlatformIP4Route
 			NM_CMP_FIELD (a, b, gateway);
 			NM_CMP_FIELD (a, b, mss);
 			NM_CMP_FIELD (a, b, pref_src);
+			NM_CMP_FIELD (a, b, window);
 		}
 		break;
 	case NM_PLATFORM_IP_ROUTE_CMP_TYPE_SEMANTICALLY:

src/platform/nm-platform.h

@@ -355,18 +355,27 @@ typedef union {
 	\
 	guint32 metric; \
 	\
-	/* RTA_METRICS.RTAX_ADVMSS. For IPv4 routes, this is part of their
+	guint32 tos; \
-	 * ID (meaning: you can add otherwise idential IPv4 routes that
+	\
-	 * only differ by mss). On the other hand, for IPv6 you cannot add two
+	\
-	 * IPv6 routes that only differ by mss.
+	/* RTA_METRICS:
 	 *
-	 * When deleting a route, kernel seems to ignore RTA_METRICS.RTAX_ADVMSS.
+	 * For IPv4 routes, these properties are part of their
-	 * Which is a problem for IPv4 because you cannot explicitly select which
+	 * ID (meaning: you can add otherwise idential IPv4 routes that
-	 * route to delete. Kernel just picks the first. */ \
+	 * only differ by the metric property).
+	 * On the other hand, for IPv6 you cannot add two IPv6 routes that only differ
+	 * by an RTA_METRICS property.
+	 *
+	 * When deleting a route, kernel seems to ignore the RTA_METRICS propeties.
+	 * That is a problem/bug for IPv4 because you cannot explicitly select which
+	 * route to delete. Kernel just picks the first. See rh#1475642. */ \
+	\
+	/* RTA_METRICS.RTAX_ADVMSS (iproute2: advmss) */ \
 	guint32 mss; \
 	\
-	guint32 tos; \
+	/* RTA_METRICS.RTAX_WINDOW (iproute2: window) */ \
 	guint32 window; \
+	\
 	guint32 cwnd; \
 	guint32 initcwnd; \
 	guint32 initrwnd; \