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authorHannes Frederic Sowa <hannes@stressinduktion.org>2014-02-26 04:20:43 +0400
committerDavid S. Miller <davem@davemloft.net>2014-02-27 00:51:01 +0400
commit0b95227a7ba7e69f795757cd7c839eff0615f2d1 (patch)
treec7e343f11b05e29cf4d9ccc4b2026f0002fd78f7 /include/uapi/linux/in6.h
parent1b346576359c72bee34b1476b4fc63d77d37b314 (diff)
downloadlinux-0b95227a7ba7e69f795757cd7c839eff0615f2d1.tar.xz
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.h4
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