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ipv6: add the IPV6_FL_F_REFLECT flag to IPV6_FL_A_GET

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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>
This commit is contained in:
Florent Fourcot
2014-01-17 17:15:03 +01:00
committed by David S. Miller
parent 3acfa1e73c
commit df3687ffc6
4 changed files with 34 additions and 1 deletions
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1
include/linux/ipv6.h
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@@ -191,6 +191,7 @@ struct ipv6_pinfo {
/* sockopt flags */
__u16 recverr:1,
sndflow:1,
repflow:1,
pmtudisc:3,
ipv6only:1,
srcprefs:3, /* 001: prefer temporary address