zebra: Make ucmp scale value owned by zrouter

The weight scale value might be useful to have it change it's behavior at a later time or controlled by something depending on how FRR is compiled/ran. Let's start that process Signed-off-by: Donald Sharp <[email protected]>
donaldsharp · Oct 12, 2023 · 2d6a012 · 2d6a012
1 parent 35718a2
commit 2d6a012
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Showing 3 changed files with 6 additions and 1 deletion.
diff --git a/zebra/zapi_msg.c b/zebra/zapi_msg.c
@@ -1730,7 +1730,8 @@ static bool zapi_read_nexthops(struct zserv *client, struct prefix *p,
 		for (i = 0; i < nexthop_num; i++) {
 			znh = &nhops[i];
 
-			tmp = (uint64_t)znh->weight * 255;
+			tmp = (uint64_t)znh->weight *
+				zrouter.nexthop_weight_scale_value;
 			znh->weight = MAX(1, ((uint32_t)(tmp / max_weight)));
 		}
 	}

diff --git a/zebra/zebra_router.c b/zebra/zebra_router.c
@@ -323,6 +323,8 @@ void zebra_router_init(bool asic_offload, bool notify_on_ack,
 #endif
 	zrouter.asic_notification_nexthop_control = false;
 
+	zrouter.nexthop_weight_scale_value = 255;
+
 #ifdef HAVE_SCRIPTING
 	zebra_script_init();
 #endif

diff --git a/zebra/zebra_router.h b/zebra/zebra_router.h
@@ -231,6 +231,8 @@ struct zebra_router {
 	bool allow_delete;
 
 	uint8_t protodown_r_bit;
+
+	uint64_t nexthop_weight_scale_value;
 };
 
 #define GRACEFUL_RESTART_TIME 60