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| author |   FX Le Bail <fx.lebail@yahoo.com> | 2014-01-22 07:42:37 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-01-22 21:57:05 -0800 |
| commit | 7c90cc2d40cab15adc78545edba8b5996bd4cade (patch) | |
| tree | 64222b6892e1ffd29f91102cada60da71ea7a40f /net/ipv6/anycast.c | |
| parent | net: update comments of "struct msghdr" with the more accurate RFC3542 ones (diff) | |
| download | linux-dev-7c90cc2d40cab15adc78545edba8b5996bd4cade.tar.xz linux-dev-7c90cc2d40cab15adc78545edba8b5996bd4cade.zip | |
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')
| -rw-r--r-- | net/ipv6/anycast.c | 11 |
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); +} #ifdef CONFIG_PROC_FS struct ac6_iter_state { |