From 590bf22a3437e6d9e27accdd9aebe587c0672604 Mon Sep 17 00:00:00 2001
From: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Date: Wed, 21 Sep 2016 11:45:58 +0200
Subject: [PATCH] ipmroute: add support for age dumping

Add support to dump the mroute cache entry age if the show_stats (-s)
switch is provided.
Example:
$ ip -s mroute
(0.0.0.0, 239.10.10.10)          Iif: eth0       Oifs: eth0
  0 packets, 0 bytes, Age  245.44

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
---
 ip/ipmroute.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/ip/ipmroute.c b/ip/ipmroute.c
index 133367a2..512afcd2 100644
--- a/ip/ipmroute.c
+++ b/ip/ipmroute.c
@@ -169,6 +169,13 @@ int print_mroute(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
 			fprintf(fp, ", %"PRIu64" arrived on wrong iif.",
 				(uint64_t)mfcs->mfcs_wrong_if);
 	}
+	if (show_stats && tb[RTA_EXPIRES]) {
+		struct timeval tv;
+
+		__jiffies_to_tv(&tv, rta_getattr_u64(tb[RTA_EXPIRES]));
+		fprintf(fp, ", Age %4i.%.2i", (int)tv.tv_sec,
+			(int)tv.tv_usec/10000);
+	}
 	fprintf(fp, "\n");
 	fflush(fp);
 	return 0;