From: FX Le Bail <fx.lebail@yahoo.com>
Date: Wed, 22 Jan 2014 06:42:37 +0000 (+0100)
Subject: ipv6: enable anycast addresses as source addresses for datagrams
X-Git-Tag: v3.14-rc1~94^2~30
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c90cc2d40cab15adc78545edba8b5996bd4cade;p=pandora-kernel.git

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>
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