diff options
| author | Daniel Borkmann <dborkman@redhat.com> | 2013-04-08 04:01:30 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-04-08 16:55:28 -0400 |
| commit | f53adae4eae5ad9f7343ff4a0fc68b468c981138 (patch) | |
| tree | 86ae2a2fcd5e7c1e8db14479d217df079cc995fb /include | |
| parent | 9401bb5c339d2f9529b2f859638440ce92227c83 (diff) | |
net: ipv6: add tokenized interface identifier support
This patch adds support for IPv6 tokenized IIDs, that allow
for administrators to assign well-known host-part addresses
to nodes whilst still obtaining global network prefix from
Router Advertisements. It is currently in draft status.
The primary target for such support is server platforms
where addresses are usually manually configured, rather
than using DHCPv6 or SLAAC. By using tokenised identifiers,
hosts can still determine their network prefix by use of
SLAAC, but more readily be automatically renumbered should
their network prefix change. [...]
The disadvantage with static addresses is that they are
likely to require manual editing should the network prefix
in use change. If instead there were a method to only
manually configure the static identifier part of the IPv6
address, then the address could be automatically updated
when a new prefix was introduced, as described in [RFC4192]
for example. In such cases a DNS server might be
configured with such a tokenised interface identifier of
::53, and SLAAC would use the token in constructing the
interface address, using the advertised prefix. [...]
http://tools.ietf.org/html/draft-chown-6man-tokenised-ipv6-identifiers-02
The implementation is partially based on top of Mark K.
Thompson's proof of concept. However, it uses the Netlink
interface for configuration resp. data retrival, so that
it can be easily extended in future. Successfully tested
by myself.
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Cc: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/if_inet6.h | 2 | ||||
| -rw-r--r-- | include/uapi/linux/if_link.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h index 93563221d29a..f1063d62cd13 100644 --- a/include/net/if_inet6.h +++ b/include/net/if_inet6.h @@ -187,6 +187,8 @@ struct inet6_dev { struct list_head tempaddr_list; #endif + struct in6_addr token; + struct neigh_parms *nd_parms; struct inet6_dev *next; struct ipv6_devconf cnf; diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index c4edfe11f1f7..6b35c4211f65 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -201,6 +201,7 @@ enum { IFLA_INET6_MCAST, /* MC things. What of them? */ IFLA_INET6_CACHEINFO, /* time values and max reasm size */ IFLA_INET6_ICMP6STATS, /* statistics (icmpv6) */ + IFLA_INET6_TOKEN, /* device token */ __IFLA_INET6_MAX }; |