ipv6: add the IPV6_FL_F_REFLECT flag to IPV6_FL_A_GET
With this option, the socket will reply with the flow label value read
on received packets.
The goal is to have a connection with the same flow label in both
direction of the communication.
Changelog of V4:
* Do not erase the flow label on the listening socket. Use pktopts to
store the received value
Signed-off-by: Florent Fourcot <florent.fourcot@enst-bretagne.fr>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 7e1ded0..1084304 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -191,6 +191,7 @@
/* sockopt flags */
__u16 recverr:1,
sndflow:1,
+ repflow:1,
pmtudisc:3,
ipv6only:1,
srcprefs:3, /* 001: prefer temporary address