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authorNeil Horman <nhorman@tuxdriver.com>2007-04-25 17:08:10 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:23:43 -0700
commit95c385b4d5a71b8ad552aecaa968ea46d7da2f6a (patch)
tree49d8e60418cb4eeb0c9ed79fd095af50f6ec6623 /include
parent502b093569e48db264831be7966e1c447de2f52f (diff)
[IPV6] ADDRCONF: Optimistic Duplicate Address Detection (RFC 4429) Support.
Nominally an autoconfigured IPv6 address is added to an interface in the Tentative state (as per RFC 2462). Addresses in this state remain in this state while the Duplicate Address Detection process operates on them to determine their uniqueness on the network. During this period, these tentative addresses may not be used for communication, increasing the time before a node may be able to communicate on a network. Using Optimistic Duplicate Address Detection, autoconfigured addresses may be used immediately for communication on the network, as long as certain rules are followed to avoid conflicts with other nodes during the Duplicate Address Detection process. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/if_addr.h1
-rw-r--r--include/linux/ipv6.h4
-rw-r--r--include/net/addrconf.h4
3 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/if_addr.h b/include/linux/if_addr.h
index d557e4ce9b6..43f3bedaafd 100644
--- a/include/linux/if_addr.h
+++ b/include/linux/if_addr.h
@@ -39,6 +39,7 @@ enum
#define IFA_F_TEMPORARY IFA_F_SECONDARY
#define IFA_F_NODAD 0x02
+#define IFA_F_OPTIMISTIC 0x04
#define IFA_F_HOMEADDRESS 0x10
#define IFA_F_DEPRECATED 0x20
#define IFA_F_TENTATIVE 0x40
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 713eb5eaa81..e046b22a222 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -178,6 +178,9 @@ struct ipv6_devconf {
#endif
__s32 proxy_ndp;
__s32 accept_source_route;
+#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
+ __s32 optimistic_dad;
+#endif
void *sysctl;
};
@@ -208,6 +211,7 @@ enum {
DEVCONF_PROXY_NDP,
__DEVCONF_OPTIMISTIC_DAD,
DEVCONF_ACCEPT_SOURCE_ROUTE,
+ DEVCONF_OPTIMISTIC_DAD,
DEVCONF_MAX
};
diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index 88df8fc814e..f3531d0bcd0 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -73,7 +73,9 @@ extern int ipv6_get_saddr(struct dst_entry *dst,
extern int ipv6_dev_get_saddr(struct net_device *dev,
struct in6_addr *daddr,
struct in6_addr *saddr);
-extern int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *);
+extern int ipv6_get_lladdr(struct net_device *dev,
+ struct in6_addr *addr,
+ unsigned char banned_flags);
extern int ipv6_rcv_saddr_equal(const struct sock *sk,
const struct sock *sk2);
extern void addrconf_join_solict(struct net_device *dev,