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authorEric Dumazet <edumazet@google.com>2019-07-01 06:39:36 -0700
committerDavid S. Miller <davem@davemloft.net>2019-07-01 10:54:51 -0700
commita346abe051bd2bd0d5d0140b2da9ec95639acad7 (patch)
tree1e03874ac049b3d298d382e678a84b68f7ce5f12 /include
parent954a5a029472568845a25cd1c59e02e09db3316c (diff)
downloadlinux-a346abe051bd2bd0d5d0140b2da9ec95639acad7.tar.gz
ipv6: icmp: allow flowlabel reflection in echo replies
Extend flowlabel_reflect bitmask to allow conditional
reflection of incoming flowlabels in echo replies.

Note this has precedence against auto flowlabels.

Add flowlabel_reflect enum to replace hard coded
values.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/ipv6.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index b41f6a0fa903..8eca5fb30376 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -301,6 +301,13 @@ struct ipv6_txoptions {
 	/* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */
 };
 
+/* flowlabel_reflect sysctl values */
+enum flowlabel_reflect {
+	FLOWLABEL_REFLECT_ESTABLISHED		= 1,
+	FLOWLABEL_REFLECT_TCP_RESET		= 2,
+	FLOWLABEL_REFLECT_ICMPV6_ECHO_REPLIES	= 4,
+};
+
 struct ip6_flowlabel {
 	struct ip6_flowlabel __rcu *next;
 	__be32			label;