diff options
| author | Erik Kline <ek@google.com> | 2015-02-04 12:01:23 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-02-06 00:37:41 +0100 |
| commit | c58da4c659803ac12eca5275c8a7064222adb4c7 (patch) | |
| tree | 2be9074469ec18c9b99ba52065fe0b69d2bf3789 /include/net/addrconf.h | |
| parent | flowcache: Fix kernel panic in flow_cache_flush_task (diff) | |
| download | linux-c58da4c659803ac12eca5275c8a7064222adb4c7.tar.xz linux-c58da4c659803ac12eca5275c8a7064222adb4c7.zip | |
net: ipv6: allow explicitly choosing optimistic addresses
RFC 4429 ("Optimistic DAD") states that optimistic addresses
should be treated as deprecated addresses. From section 2.1:
Unless noted otherwise, components of the IPv6 protocol stack
should treat addresses in the Optimistic state equivalently to
those in the Deprecated state, indicating that the address is
available for use but should not be used if another suitable
address is available.
Optimistic addresses are indeed avoided when other addresses are
available (i.e. at source address selection time), but they have
not heretofore been available for things like explicit bind() and
sendmsg() with struct in6_pktinfo, etc.
This change makes optimistic addresses treated more like
deprecated addresses than tentative ones.
Signed-off-by: Erik Kline <ek@google.com>
Acked-by: Lorenzo Colitti <lorenzo@google.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/addrconf.h')
| -rw-r--r-- | include/net/addrconf.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/net/addrconf.h b/include/net/addrconf.h index d13573bb879e..80456f72d70a 100644 --- a/include/net/addrconf.h +++ b/include/net/addrconf.h @@ -62,6 +62,9 @@ int addrconf_set_dstaddr(struct net *net, void __user *arg); int ipv6_chk_addr(struct net *net, const struct in6_addr *addr, const struct net_device *dev, int strict); +int ipv6_chk_addr_and_flags(struct net *net, const struct in6_addr *addr, + const struct net_device *dev, int strict, + u32 banned_flags); #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) int ipv6_chk_home_addr(struct net *net, const struct in6_addr *addr); |