diff options
| author | John Heffner <jheffner@psc.edu> | 2007-04-20 15:53:27 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-04-25 22:29:10 -0700 |
| commit | 628a5c561890a9a9a74dea017873530584aab06e (patch) | |
| tree | f10edc4078c3f19487bbe3a902ecadda89273361 /include | |
| parent | b881ef7603230550aa0150b22af94089f07ab00d (diff) | |
| download | lwn-628a5c561890a9a9a74dea017873530584aab06e.tar.gz lwn-628a5c561890a9a9a74dea017873530584aab06e.zip | |
[INET]: Add IP(V6)_PMTUDISC_RPOBE
Add IP(V6)_PMTUDISC_PROBE value for IP(V6)_MTU_DISCOVER. This option forces
us not to fragment, but does not make use of the kernel path MTU discovery.
That is, it allows for user-mode MTU probing (or, packetization-layer path
MTU discovery). This is particularly useful for diagnostic utilities, like
traceroute/tracepath.
Signed-off-by: John Heffner <jheffner@psc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/in.h | 1 | ||||
| -rw-r--r-- | include/linux/in6.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/in.h b/include/linux/in.h index 1912e7c0bc26..3975cbf52f20 100644 --- a/include/linux/in.h +++ b/include/linux/in.h @@ -83,6 +83,7 @@ struct in_addr { #define IP_PMTUDISC_DONT 0 /* Never send DF frames */ #define IP_PMTUDISC_WANT 1 /* Use per route hints */ #define IP_PMTUDISC_DO 2 /* Always DF */ +#define IP_PMTUDISC_PROBE 3 /* Ignore dst pmtu */ #define IP_MULTICAST_IF 32 #define IP_MULTICAST_TTL 33 diff --git a/include/linux/in6.h b/include/linux/in6.h index 4e8350ae8869..d559fac4a26d 100644 --- a/include/linux/in6.h +++ b/include/linux/in6.h @@ -179,6 +179,7 @@ struct in6_flowlabel_req #define IPV6_PMTUDISC_DONT 0 #define IPV6_PMTUDISC_WANT 1 #define IPV6_PMTUDISC_DO 2 +#define IPV6_PMTUDISC_PROBE 3 /* Flowlabel */ #define IPV6_FLOWLABEL_MGR 32 |