diff --git a/src/backend.c b/src/backend.c
index 0912fd4..e9043b4 100644
--- a/src/backend.c
+++ b/src/backend.c
@@ -97,7 +97,7 @@
 	px->lbprm.tot_wact = px->lbprm.tot_wbck = 0;
 	px->lbprm.fbck = NULL;
 	for (srv = px->srv; srv != NULL; srv = srv->next) {
-		if (!srv_is_usable(srv->state, srv->eweight))
+		if (!srv_is_usable(srv))
 			continue;
 
 		if (srv->state & SRV_BACKUP) {
@@ -547,7 +547,7 @@
 	      (!s->be->max_ka_queue ||
 	       server_has_room(__objt_server(conn->target)) ||
 	       (__objt_server(conn->target)->nbpend + 1) < s->be->max_ka_queue))) &&
-	    srv_is_usable(__objt_server(conn->target)->state, __objt_server(conn->target)->eweight)) {
+	    srv_is_usable(__objt_server(conn->target))) {
 		/* This session was relying on a server in a previous request
 		 * and the proxy has "option prefer-current-server" set, so
 		 * let's try to reuse the same server.
diff --git a/src/lb_chash.c b/src/lb_chash.c
index fb10c72..3563cff 100644
--- a/src/lb_chash.c
+++ b/src/lb_chash.c
@@ -101,10 +101,10 @@
 	if (!srv_lb_status_changed(srv))
 		return;
 
-	if (srv_is_usable(srv->state, srv->eweight))
+	if (srv_is_usable(srv))
 		goto out_update_state;
 
-	if (!srv_is_usable(srv->prev_state, srv->prev_eweight))
+	if (!srv_was_usable(srv))
 		/* server was already down */
 		goto out_update_backend;
 
@@ -121,7 +121,7 @@
 				srv2 = srv2->next;
 			} while (srv2 &&
 				 !((srv2->state & SRV_BACKUP) &&
-				   srv_is_usable(srv2->state, srv2->eweight)));
+				   srv_is_usable(srv2)));
 			p->lbprm.fbck = srv2;
 		}
 	} else {
@@ -152,10 +152,10 @@
 	if (!srv_lb_status_changed(srv))
 		return;
 
-	if (!srv_is_usable(srv->state, srv->eweight))
+	if (!srv_is_usable(srv))
 		goto out_update_state;
 
-	if (srv_is_usable(srv->prev_state, srv->prev_eweight))
+	if (srv_was_usable(srv))
 		/* server was already up */
 		goto out_update_backend;
 
@@ -213,8 +213,8 @@
 	 * possibly a new tree for this server.
 	 */
 
-	old_state = srv_is_usable(srv->prev_state, srv->prev_eweight);
-	new_state = srv_is_usable(srv->state, srv->eweight);
+	old_state = srv_was_usable(srv);
+	new_state = srv_is_usable(srv);
 
 	if (!old_state && !new_state) {
 		srv_lb_commit_status(srv);
@@ -398,7 +398,7 @@
 			srv->lb_nodes[node].node.key = full_hash(srv->puid * SRV_EWGHT_RANGE + node);
 		}
 
-		if (srv_is_usable(srv->state, srv->eweight))
+		if (srv_is_usable(srv))
 			chash_queue_dequeue_srv(srv);
 	}
 }
diff --git a/src/lb_fas.c b/src/lb_fas.c
index b8b0569..7bd3d05 100644
--- a/src/lb_fas.c
+++ b/src/lb_fas.c
@@ -80,10 +80,10 @@
 	if (!srv_lb_status_changed(srv))
 		return;
 
-	if (srv_is_usable(srv->state, srv->eweight))
+	if (srv_is_usable(srv))
 		goto out_update_state;
 
-	if (!srv_is_usable(srv->prev_state, srv->prev_eweight))
+	if (!srv_was_usable(srv))
 		/* server was already down */
 		goto out_update_backend;
 
@@ -100,7 +100,7 @@
 				srv2 = srv2->next;
 			} while (srv2 &&
 				 !((srv2->state & SRV_BACKUP) &&
-				   srv_is_usable(srv2->state, srv2->eweight)));
+				   srv_is_usable(srv2)));
 			p->lbprm.fbck = srv2;
 		}
 	} else {
@@ -132,10 +132,10 @@
 	if (!srv_lb_status_changed(srv))
 		return;
 
-	if (!srv_is_usable(srv->state, srv->eweight))
+	if (!srv_is_usable(srv))
 		goto out_update_state;
 
-	if (srv_is_usable(srv->prev_state, srv->prev_eweight))
+	if (srv_was_usable(srv))
 		/* server was already up */
 		goto out_update_backend;
 
@@ -195,8 +195,8 @@
 	 * possibly a new tree for this server.
 	 */
 	 
-	old_state = srv_is_usable(srv->prev_state, srv->prev_eweight);
-	new_state = srv_is_usable(srv->state, srv->eweight);
+	old_state = srv_was_usable(srv);
+	new_state = srv_is_usable(srv);
 
 	if (!old_state && !new_state) {
 		srv_lb_commit_status(srv);
@@ -257,7 +257,7 @@
 
 	/* queue active and backup servers in two distinct groups */
 	for (srv = p->srv; srv; srv = srv->next) {
-		if (!srv_is_usable(srv->state, srv->eweight))
+		if (!srv_is_usable(srv))
 			continue;
 		srv->lb_tree = (srv->state & SRV_BACKUP) ? &p->lbprm.fas.bck : &p->lbprm.fas.act;
 		fas_queue_srv(srv);
diff --git a/src/lb_fwlc.c b/src/lb_fwlc.c
index ca68a33..9fb57ac 100644
--- a/src/lb_fwlc.c
+++ b/src/lb_fwlc.c
@@ -72,10 +72,10 @@
 	if (!srv_lb_status_changed(srv))
 		return;
 
-	if (srv_is_usable(srv->state, srv->eweight))
+	if (srv_is_usable(srv))
 		goto out_update_state;
 
-	if (!srv_is_usable(srv->prev_state, srv->prev_eweight))
+	if (!srv_was_usable(srv))
 		/* server was already down */
 		goto out_update_backend;
 
@@ -92,7 +92,7 @@
 				srv2 = srv2->next;
 			} while (srv2 &&
 				 !((srv2->state & SRV_BACKUP) &&
-				   srv_is_usable(srv2->state, srv2->eweight)));
+				   srv_is_usable(srv2)));
 			p->lbprm.fbck = srv2;
 		}
 	} else {
@@ -124,10 +124,10 @@
 	if (!srv_lb_status_changed(srv))
 		return;
 
-	if (!srv_is_usable(srv->state, srv->eweight))
+	if (!srv_is_usable(srv))
 		goto out_update_state;
 
-	if (srv_is_usable(srv->prev_state, srv->prev_eweight))
+	if (srv_was_usable(srv))
 		/* server was already up */
 		goto out_update_backend;
 
@@ -187,8 +187,8 @@
 	 * possibly a new tree for this server.
 	 */
 	 
-	old_state = srv_is_usable(srv->prev_state, srv->prev_eweight);
-	new_state = srv_is_usable(srv->state, srv->eweight);
+	old_state = srv_was_usable(srv);
+	new_state = srv_is_usable(srv);
 
 	if (!old_state && !new_state) {
 		srv_lb_commit_status(srv);
@@ -249,7 +249,7 @@
 
 	/* queue active and backup servers in two distinct groups */
 	for (srv = p->srv; srv; srv = srv->next) {
-		if (!srv_is_usable(srv->state, srv->eweight))
+		if (!srv_is_usable(srv))
 			continue;
 		srv->lb_tree = (srv->state & SRV_BACKUP) ? &p->lbprm.fwlc.bck : &p->lbprm.fwlc.act;
 		fwlc_queue_srv(srv);
diff --git a/src/lb_fwrr.c b/src/lb_fwrr.c
index b8756b6..f15de23 100644
--- a/src/lb_fwrr.c
+++ b/src/lb_fwrr.c
@@ -42,10 +42,10 @@
 	if (!srv_lb_status_changed(srv))
 		return;
 
-	if (srv_is_usable(srv->state, srv->eweight))
+	if (srv_is_usable(srv))
 		goto out_update_state;
 
-	if (!srv_is_usable(srv->prev_state, srv->prev_eweight))
+	if (!srv_was_usable(srv))
 		/* server was already down */
 		goto out_update_backend;
 
@@ -65,7 +65,7 @@
 				srv2 = srv2->next;
 			} while (srv2 &&
 				 !((srv2->state & SRV_BACKUP) &&
-				   srv_is_usable(srv2->state, srv2->eweight)));
+				   srv_is_usable(srv2)));
 			p->lbprm.fbck = srv2;
 		}
 	} else {
@@ -98,10 +98,10 @@
 	if (!srv_lb_status_changed(srv))
 		return;
 
-	if (!srv_is_usable(srv->state, srv->eweight))
+	if (!srv_is_usable(srv))
 		goto out_update_state;
 
-	if (srv_is_usable(srv->prev_state, srv->prev_eweight))
+	if (srv_was_usable(srv))
 		/* server was already up */
 		goto out_update_backend;
 
@@ -165,8 +165,8 @@
 	 * possibly a new tree for this server.
 	 */
 	 
-	old_state = srv_is_usable(srv->prev_state, srv->prev_eweight);
-	new_state = srv_is_usable(srv->state, srv->eweight);
+	old_state = srv_was_usable(srv);
+	new_state = srv_is_usable(srv);
 
 	if (!old_state && !new_state) {
 		srv_lb_commit_status(srv);
@@ -290,7 +290,7 @@
 
 	/* queue active and backup servers in two distinct groups */
 	for (srv = p->srv; srv; srv = srv->next) {
-		if (!srv_is_usable(srv->state, srv->eweight))
+		if (!srv_is_usable(srv))
 			continue;
 		fwrr_queue_by_weight((srv->state & SRV_BACKUP) ?
 				p->lbprm.fwrr.bck.init :
@@ -319,7 +319,7 @@
 	/* Delay everything which does not fit into the window and everything
 	 * which does not fit into the theorical new window.
 	 */
-	if (!srv_is_usable(s->state, s->eweight)) {
+	if (!srv_is_usable(s)) {
 		fwrr_remove_from_tree(s);
 	}
 	else if (s->eweight <= 0 ||
diff --git a/src/lb_map.c b/src/lb_map.c
index 2d296d7..a108bdb 100644
--- a/src/lb_map.c
+++ b/src/lb_map.c
@@ -31,7 +31,7 @@
 	if (!srv_lb_status_changed(srv))
 		return;
 
-	if (srv_is_usable(srv->state, srv->eweight))
+	if (srv_is_usable(srv))
 		goto out_update_state;
 
 	/* FIXME: could be optimized since we know what changed */
@@ -50,7 +50,7 @@
 	if (!srv_lb_status_changed(srv))
 		return;
 
-	if (!srv_is_usable(srv->state, srv->eweight))
+	if (!srv_is_usable(srv))
 		goto out_update_state;
 
 	/* FIXME: could be optimized since we know what changed */
diff --git a/src/queue.c b/src/queue.c
index abc0f8c..006941b 100644
--- a/src/queue.c
+++ b/src/queue.c
@@ -109,7 +109,7 @@
 	ps = pendconn_from_srv(srv);
 	pp = pendconn_from_px(px);
 	/* we want to get the definitive pendconn in <ps> */
-	if (!pp || !srv_is_usable(rsrv->state, rsrv->eweight)) {
+	if (!pp || !srv_is_usable(rsrv)) {
 		if (!ps)
 			return NULL;
 	} else {