path: root/net/ipv6/anycast.c
diff options
authorFX Le Bail <fx.lebail@yahoo.com>2014-01-22 07:42:37 +0100
committerDavid S. Miller <davem@davemloft.net>2014-01-22 21:57:05 -0800
commit7c90cc2d40cab15adc78545edba8b5996bd4cade (patch)
tree64222b6892e1ffd29f91102cada60da71ea7a40f /net/ipv6/anycast.c
parentnet: update comments of "struct msghdr" with the more accurate RFC3542 ones (diff)
ipv6: enable anycast addresses as source addresses for datagrams
This change allows to consider an anycast address valid as source address when given via an IPV6_PKTINFO or IPV6_2292PKTINFO ancillary data item. So, when sending a datagram with ancillary data, the unicast and anycast addresses are handled in the same way. - Adds ipv6_chk_acast_addr_src() to check if an anycast address is link-local on given interface or is global. - Uses it in ip6_datagram_send_ctl(). Signed-off-by: Francois-Xavier Le Bail <fx.lebail@yahoo.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/anycast.c')
1 files changed, 11 insertions, 0 deletions
diff --git a/net/ipv6/anycast.c b/net/ipv6/anycast.c
index 5a80f15a9de2..210183244689 100644
--- a/net/ipv6/anycast.c
+++ b/net/ipv6/anycast.c
@@ -383,6 +383,17 @@ bool ipv6_chk_acast_addr(struct net *net, struct net_device *dev,
return found;
+/* check if this anycast address is link-local on given interface or
+ * is global
+ */
+bool ipv6_chk_acast_addr_src(struct net *net, struct net_device *dev,
+ const struct in6_addr *addr)
+ return ipv6_chk_acast_addr(net,
+ (ipv6_addr_type(addr) & IPV6_ADDR_LINKLOCAL ?
+ dev : NULL),
+ addr);
struct ac6_iter_state {