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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
net/ipv6/ipv6_sockglue.c
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@@ -722,7 +722,7 @@ done:
case IPV6_MTU_DISCOVER:
if (optlen < sizeof(int))
goto e_inval;
if (val < IP_PMTUDISC_DONT || val > IP_PMTUDISC_PROBE)
if (val < IPV6_PMTUDISC_DONT || val > IPV6_PMTUDISC_INTERFACE)
goto e_inval;
np->pmtudisc = val;
retv = 0;