net/ipv6: separate handling of FIB entries from dst based routes

Last step before flipping the data type for FIB entries:
- use fib6_info_alloc to create FIB entries in ip6_route_info_create
  and addrconf_dst_alloc
- use fib6_info_release in place of dst_release, ip6_rt_put and
  rt6_release
- remove the dst_hold before calling __ip6_ins_rt or ip6_del_rt
- when purging routes, drop per-cpu routes
- replace inc and dec of rt6i_ref with fib6_info_hold and fib6_info_release
- use rt->from since it points to the FIB entry
- drop references to exception bucket, fib6_metrics and per-cpu from
  dst entries (those are relevant for fib entries only)

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 556717154fa3..a28857088bff 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1283,7 +1283,7 @@ static void ndisc_router_discovery(struct sk_buff *skb)
 			ND_PRINTK(0, err,
 				  "RA: %s got default router without neighbour\n",
 				  __func__);
-			ip6_rt_put(rt);
+			fib6_info_release(rt);
 			return;
 		}
 	}
@@ -1313,7 +1313,7 @@ static void ndisc_router_discovery(struct sk_buff *skb)
 			ND_PRINTK(0, err,
 				  "RA: %s got default router without neighbour\n",
 				  __func__);
-			ip6_rt_put(rt);
+			fib6_info_release(rt);
 			return;
 		}
 		neigh->flags |= NTF_ROUTER;
@@ -1499,7 +1499,7 @@ skip_routeinfo:
 		ND_PRINTK(2, warn, "RA: invalid RA options\n");
 	}
 out:
-	ip6_rt_put(rt);
+	fib6_info_release(rt);
 	if (neigh)
 		neigh_release(neigh);
 }