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| author |   Hannes Frederic Sowa <hannes@stressinduktion.org> | 2014-02-26 01:20:43 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-02-26 15:51:01 -0500 |
| commit | 0b95227a7ba7e69f795757cd7c839eff0615f2d1 (patch) | |
| tree | c7e343f11b05e29cf4d9ccc4b2026f0002fd78f7 /include/uapi/linux/in6.h | |
| parent | ipv4: yet another new IP_MTU_DISCOVER option IP_PMTUDISC_OMIT (diff) | |
| download | linux-dev-0b95227a7ba7e69f795757cd7c839eff0615f2d1.tar.xz linux-dev-0b95227a7ba7e69f795757cd7c839eff0615f2d1.zip | |
ipv6: yet another new IPV6_MTU_DISCOVER option IPV6_PMTUDISC_OMIT
This option has the same semantic as IP_PMTUDISC_OMIT for IPv4 which
got recently introduced. It doesn't honor the path mtu discovered by the
host but in contrary to IPV6_PMTUDISC_INTERFACE allows the generation of
fragments if the packet size exceeds the MTU of the outgoing interface
MTU.
Fixes: 93b36cf3425b9b ("ipv6: support IPV6_PMTU_INTERFACE on sockets")
Cc: Florian Weimer <fweimer@redhat.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/in6.h')
| -rw-r--r-- | include/uapi/linux/in6.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/linux/in6.h b/include/uapi/linux/in6.h index e9a1d2d973b6..0d8e0f0342dc 100644 --- a/include/uapi/linux/in6.h +++ b/include/uapi/linux/in6.h @@ -185,6 +185,10 @@ struct in6_flowlabel_req { * also see comments on IP_PMTUDISC_INTERFACE */ #define IPV6_PMTUDISC_INTERFACE 4 +/* weaker version of IPV6_PMTUDISC_INTERFACE, which allows packets to + * get fragmented if they exceed the interface mtu + */ +#define IPV6_PMTUDISC_OMIT 5 /* Flowlabel */ #define IPV6_FLOWLABEL_MGR 32 |