static int xfrm6_get_saddr(struct net *net,
xfrm_address_t *saddr, xfrm_address_t *daddr)
{
struct dst_entry *dst;
struct net_device *dev;
dst = xfrm6_dst_lookup(net, 0, NULL, daddr);
if (IS_ERR(dst))
return -EHOSTUNREACH;
dev = ip6_dst_idev(dst)->dev;
ipv6_dev_get_saddr(dev_net(dev), dev, &daddr->in6, 0, &saddr->in6);
dst_release(dst);
return 0;
}
static int xfrm6_get_saddr(xfrm_address_t *saddr, xfrm_address_t *daddr)
{
struct rt6_info *rt;
struct flowi fl_tunnel = {
.nl_u = {
.ip6_u = {
.daddr = *(struct in6_addr *)&daddr->a6,
},
},
};
if (!xfrm6_dst_lookup((struct xfrm_dst **)&rt, &fl_tunnel)) {
ipv6_get_saddr(&rt->u.dst, (struct in6_addr *)&daddr->a6,
(struct in6_addr *)&saddr->a6);
dst_release(&rt->u.dst);
return 0;
}
return -EHOSTUNREACH;
}