netdev - [PATCH net-next 5/6] net: add support for sending RFC 8335 PROBE messages

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Message-Id: <b27c48703752ed632f5de9d63606bc2d48066def.1607050389.git.andreas.a.roeseler@gmail.com>
Date:   Thu,  3 Dec 2020 19:17:02 -0800
From:   Andreas Roeseler <andreas.a.roeseler@...il.com>
To:     davem@...emloft.net, kuznet@....inr.ac.ru, yoshfuji@...ux-ipv6.org,
        kuba@...nel.org
Cc:     netdev@...r.kernel.org
Subject: [PATCH net-next 5/6] net: add support for sending RFC 8335 PROBE messages

Modify the ping_supported function to support PROBE message types. This
allows tools such as the ping command in the iputils package to be
modified to send PROBE requests through the existing framework for
sending ping requests.

Signed-off-by: Andreas Roeseler <andreas.a.roeseler@...il.com>
---
 net/ipv4/ping.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 248856b301c4..39bdcb2bfc92 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -453,7 +453,9 @@ EXPORT_SYMBOL_GPL(ping_bind);
 static inline int ping_supported(int family, int type, int code)
 {
 	return (family == AF_INET && type == ICMP_ECHO && code == 0) ||
-	       (family == AF_INET6 && type == ICMPV6_ECHO_REQUEST && code == 0);
+	       (family == AF_INET && type == ICMP_EXT_ECHO && code == 0) ||
+	       (family == AF_INET6 && type == ICMPV6_ECHO_REQUEST && code == 0) ||
+	       (family == AF_INET6 && type == ICMPV6_EXT_ECHO_REQUEST && code == 0);
 }
 
 /*
-- 
2.25.1