router: update system routes for linux

router/router.go

@@ -113,19 +113,25 @@ func (p *localRouter) periodReload(ctx context.Context) error {
 	}
 }
 
-func (r *localRouter) reload(ctx context.Context) error {
-	routes := r.options.routes
+func (p *localRouter) reload(ctx context.Context) error {
+	routes := p.options.routes
 
-	v, err := r.load(ctx)
+	v, err := p.load(ctx)
 	if err != nil {
 		return err
 	}
 	routes = append(routes, v...)
 
-	r.mu.Lock()
-	defer r.mu.Unlock()
+	p.options.logger.Debugf("load items %d", len(routes))
 
-	r.routes = routes
+	if err := p.setSysRoutes(routes...); err != nil {
+		p.options.logger.Error(err)
+	}
+
+	p.mu.Lock()
+	defer p.mu.Unlock()
+
+	p.routes = routes
 
 	return nil
 }
@@ -177,7 +183,6 @@ func (p *localRouter) load(ctx context.Context) (routes []*router.Route, err err
 		routes = append(routes, v...)
 	}
 
-	p.options.logger.Debugf("load items %d", len(routes))
 	return
 }
 

router/router_linux.go

@@ -0,0 +1,23 @@
+package router
+
+import (
+	"fmt"
+
+	"github.com/go-gost/core/router"
+	"github.com/vishvananda/netlink"
+)
+
+func (p *localRouter) setSysRoutes(routes ...*router.Route) error {
+	for _, route := range routes {
+		p.options.logger.Debugf("ip route replace %s via %s", route.Net, route.Gateway)
+		r := netlink.Route{
+			Dst: route.Net,
+			Gw:  route.Gateway,
+		}
+		if err := netlink.RouteReplace(&r); err != nil {
+			return fmt.Errorf("set route %v %v: %v", r.Dst, r.Gw, err)
+		}
+
+	}
+	return nil
+}

router/router_other.go

@@ -0,0 +1,11 @@
+//go:build !linux
+
+package router
+
+import (
+	"github.com/go-gost/core/router"
+)
+
+func (*localRouter) setSysRoutes(routes ...*router.Route) error {
+	return nil
+}