net: rtmsg_to_fib6_config() - use new style struct initializer instead of memset

(allows for better compiler optimization)
Signed-off-by: NMaciej Żenczykowski <maze@google.com>
Reviewed-by: NDavid Ahern <dsahern@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv6/route.c

@@ -3604,23 +3604,23 @@ static void rtmsg_to_fib6_config(struct net *net,
 				 struct in6_rtmsg *rtmsg,
 				 struct fib6_config *cfg)
 {
-	memset(cfg, 0, sizeof(*cfg));
+	*cfg = (struct fib6_config){
+		.fc_table = l3mdev_fib_table_by_index(net, rtmsg->rtmsg_ifindex) ?
+			 : RT6_TABLE_MAIN,
+		.fc_ifindex = rtmsg->rtmsg_ifindex,
+		.fc_metric = rtmsg->rtmsg_metric,
+		.fc_expires = rtmsg->rtmsg_info,
+		.fc_dst_len = rtmsg->rtmsg_dst_len,
+		.fc_src_len = rtmsg->rtmsg_src_len,
+		.fc_flags = rtmsg->rtmsg_flags,
+		.fc_type = rtmsg->rtmsg_type,
+
+		.fc_nlinfo.nl_net = net,
 
-	cfg->fc_table = l3mdev_fib_table_by_index(net, rtmsg->rtmsg_ifindex) ?
-			 : RT6_TABLE_MAIN;
-	cfg->fc_ifindex = rtmsg->rtmsg_ifindex;
-	cfg->fc_metric = rtmsg->rtmsg_metric;
-	cfg->fc_expires = rtmsg->rtmsg_info;
-	cfg->fc_dst_len = rtmsg->rtmsg_dst_len;
-	cfg->fc_src_len = rtmsg->rtmsg_src_len;
-	cfg->fc_flags = rtmsg->rtmsg_flags;
-	cfg->fc_type = rtmsg->rtmsg_type;
-
-	cfg->fc_nlinfo.nl_net = net;
-
-	cfg->fc_dst = rtmsg->rtmsg_dst;
-	cfg->fc_src = rtmsg->rtmsg_src;
-	cfg->fc_gateway = rtmsg->rtmsg_gateway;
+		.fc_dst = rtmsg->rtmsg_dst,
+		.fc_src = rtmsg->rtmsg_src,
+		.fc_gateway = rtmsg->rtmsg_gateway,
+	};
 }
 
 int ipv6_route_ioctl(struct net *net, unsigned int cmd, void __user *arg)