netdev - [PATCH net-next 2/3] icmp: define probe message types

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Date:   Fri, 13 Nov 2020 13:59:38 -0800
From:   Andreas Roeseler <andreas.a.roeseler@...il.com>
To:     davem@...emloft.net
Cc:     kuznet@....inr.ac.ru, yoshfuji@...ux-ipv6.org, kuba@...nel.org,
        netdev@...r.kernel.org
Subject: [PATCH net-next 2/3] icmp: define probe message types

The types of ICMP Extended Echo Request and ICMP Extended Echo Reply are
defined in sections 2 and 3 of RFC8335.

Signed-off-by: Andreas Roeseler <andreas.a.roeseler@...il.com>
---
 include/uapi/linux/icmp.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/uapi/linux/icmp.h b/include/uapi/linux/icmp.h
index fb169a50895e..6cabb6acc156 100644
--- a/include/uapi/linux/icmp.h
+++ b/include/uapi/linux/icmp.h
@@ -66,6 +66,10 @@
 #define ICMP_EXC_TTL		0	/* TTL count exceeded		*/
 #define ICMP_EXC_FRAGTIME	1	/* Fragment Reass time exceeded	*/
 
+/* Codes for EXT_ECHO (Probe). */
+#define ICMP_EXT_ECHO		42
+#define ICMP_EXT_ECHOREPLY	43
+
 
 struct icmphdr {
   __u8		type;
-- 
2.29.2