summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--include/net/ip6_fib.h5
-rw-r--r--include/net/net_namespace.h20
-rw-r--r--net/ipv6/addrconf.c3
-rw-r--r--net/ipv6/addrconf_core.c7
-rw-r--r--net/ipv6/ip6_fib.c20
-rw-r--r--net/ipv6/route.c4
6 files changed, 33 insertions, 26 deletions
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index 9bcb220bd4ad..cf485f9aa563 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -114,16 +114,13 @@ struct rt6_info {
u32 rt6i_flags;
struct rt6key rt6i_src;
struct rt6key rt6i_prefsrc;
- u32 rt6i_metric;
struct inet6_dev *rt6i_idev;
unsigned long _rt6i_peer;
- u32 rt6i_genid;
-
+ u32 rt6i_metric;
/* more non-fragment space at head required */
unsigned short rt6i_nfheader_len;
-
u8 rt6i_protocol;
};
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index 361d26077196..e0d64667a4b3 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -352,26 +352,12 @@ static inline void rt_genid_bump_ipv4(struct net *net)
atomic_inc(&net->ipv4.rt_genid);
}
-#if IS_ENABLED(CONFIG_IPV6)
-static inline int rt_genid_ipv6(struct net *net)
-{
- return atomic_read(&net->ipv6.rt_genid);
-}
-
-static inline void rt_genid_bump_ipv6(struct net *net)
-{
- atomic_inc(&net->ipv6.rt_genid);
-}
-#else
-static inline int rt_genid_ipv6(struct net *net)
-{
- return 0;
-}
-
+extern void (*__fib6_flush_trees)(struct net *net);
static inline void rt_genid_bump_ipv6(struct net *net)
{
+ if (__fib6_flush_trees)
+ __fib6_flush_trees(net);
}
-#endif
#if IS_ENABLED(CONFIG_IEEE802154_6LOWPAN)
static inline struct netns_ieee802154_lowpan *
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 3342ee64f2e3..3e118dfddd02 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -4780,10 +4780,11 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
if (ip6_del_rt(ifp->rt))
dst_free(&ifp->rt->dst);
+
+ rt_genid_bump_ipv6(net);
break;
}
atomic_inc(&net->ipv6.dev_addr_genid);
- rt_genid_bump_ipv6(net);
}
static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
diff --git a/net/ipv6/addrconf_core.c b/net/ipv6/addrconf_core.c
index e6960457f625..98cc4cd570e2 100644
--- a/net/ipv6/addrconf_core.c
+++ b/net/ipv6/addrconf_core.c
@@ -8,6 +8,13 @@
#include <net/addrconf.h>
#include <net/ip.h>
+/* if ipv6 module registers this function is used by xfrm to force all
+ * sockets to relookup their nodes - this is fairly expensive, be
+ * careful
+ */
+void (*__fib6_flush_trees)(struct net *);
+EXPORT_SYMBOL(__fib6_flush_trees);
+
#define IPV6_ADDR_SCOPE_TYPE(scope) ((scope) << 16)
static inline unsigned int ipv6_addr_scope2type(unsigned int scope)
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 76b7f5ee8f4c..97b9fa8de377 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -1605,6 +1605,24 @@ static void fib6_prune_clones(struct net *net, struct fib6_node *fn)
fib6_clean_tree(net, fn, fib6_prune_clone, 1, NULL);
}
+static int fib6_update_sernum(struct rt6_info *rt, void *arg)
+{
+ __u32 sernum = *(__u32 *)arg;
+
+ if (rt->rt6i_node &&
+ rt->rt6i_node->fn_sernum != sernum)
+ rt->rt6i_node->fn_sernum = sernum;
+
+ return 0;
+}
+
+static void fib6_flush_trees(struct net *net)
+{
+ __u32 new_sernum = fib6_new_sernum();
+
+ fib6_clean_all(net, fib6_update_sernum, &new_sernum);
+}
+
/*
* Garbage collection
*/
@@ -1788,6 +1806,8 @@ int __init fib6_init(void)
NULL);
if (ret)
goto out_unregister_subsys;
+
+ __fib6_flush_trees = fib6_flush_trees;
out:
return ret;
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index f23fbd28a501..bafde82324c5 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -314,7 +314,6 @@ static inline struct rt6_info *ip6_dst_alloc(struct net *net,
memset(dst + 1, 0, sizeof(*rt) - sizeof(*dst));
rt6_init_peer(rt, table ? &table->tb6_peers : net->ipv6.peers);
- rt->rt6i_genid = rt_genid_ipv6(net);
INIT_LIST_HEAD(&rt->rt6i_siblings);
}
return rt;
@@ -1098,9 +1097,6 @@ static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie)
* DST_OBSOLETE_FORCE_CHK which forces validation calls down
* into this function always.
*/
- if (rt->rt6i_genid != rt_genid_ipv6(dev_net(rt->dst.dev)))
- return NULL;
-
if (!rt->rt6i_node || (rt->rt6i_node->fn_sernum != cookie))
return NULL;