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ipv6: RTA_PREFSRC support for ipv6 route source address selection

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[ipv6] Add support for RTA_PREFSRC

This patch allows a user to select the preferred source address
for a specific IPv6-Route. It can be set via a netlink message
setting RTA_PREFSRC to a valid IPv6 address which must be
up on the device the route will be bound to.

Signed-off-by: Daniel Walter <dwalter@barracuda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Walter
2011-04-13 21:10:57 +00:00
committed by David S. Miller
parent bd015928bb
commit c3968a857a
5 changed files with 84 additions and 7 deletions
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8
net/ipv6/ip6_output.c
View File

@@ -930,10 +930,10 @@ static int ip6_dst_lookup_tail(struct sock *sk,
goto out_err_release;
if (ipv6_addr_any(&fl6->saddr)) {
err = ipv6_dev_get_saddr(net, ip6_dst_idev(*dst)->dev,
&fl6->daddr,
sk ? inet6_sk(sk)->srcprefs : 0,
&fl6->saddr);
struct rt6_info *rt = (struct rt6_info *) *dst;
err = ip6_route_get_saddr(net, rt, &fl6->daddr,
sk ? inet6_sk(sk)->srcprefs : 0,
&fl6->saddr);
if (err)
goto out_err_release;
}