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ipv6: support IPV6_PMTU_INTERFACE on sockets

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IPV6_PMTU_INTERFACE is the same as IPV6_PMTU_PROBE for ipv6. Add it
nontheless for symmetry with IPv4 sockets. Also drop incoming MTU
information if this mode is enabled.

The additional bit in ipv6_pinfo just eats in the padding behind the
bitfield. There are no changes to the layout of the struct at all.

Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hannes Frederic Sowa
2013-12-15 03:41:14 +01:00
committed by David S. Miller
parent cd174e67a6
commit 93b36cf342
9 changed files with 28 additions and 7 deletions
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2
include/linux/ipv6.h
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@@ -191,7 +191,7 @@ struct ipv6_pinfo {
/* sockopt flags */
__u16 recverr:1,
sndflow:1,
pmtudisc:2,
pmtudisc:3,
ipv6only:1,
srcprefs:3, /* 001: prefer temporary address
* 010: prefer public address