From a60703e89991d23345ed929328001e19f5bc47e0 Mon Sep 17 00:00:00 2001
From: David Gibson <david@gibson.dropbear.id.au>
Date: Thu, 14 Nov 2024 14:33:07 +1100
Subject: [PATCH] ndp: Make route lifetime a #define

Currently we open-code the lifetime of the route we advertise via NDP to be
65535s (the maximum).  Change it to a #define.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
---
 ndp.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ndp.c b/ndp.c
index fd512ae..09df8d6 100644
--- a/ndp.c
+++ b/ndp.c
@@ -33,6 +33,8 @@
 #include "tap.h"
 #include "log.h"
 
+#define	RT_LIFETIME	65535
+
 #define RS	133
 #define RA	134
 #define NS	135
@@ -229,7 +231,7 @@ static void ndp_ra(const struct ctx *c, const struct in6_addr *dst)
 			.icmp6_code		= 0,
 			.icmp6_hop_limit	= 255,
 			/* RFC 8319 */
-			.icmp6_rt_lifetime	= htons_constant(65535),
+			.icmp6_rt_lifetime	= htons_constant(RT_LIFETIME),
 			.icmp6_addrconf_managed	= 1,
 		},
 		.prefix_info = {