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authorWei Wang <weiwan@google.com>2017-10-06 12:05:56 -0700
committerDavid S. Miller <davem@davemloft.net>2017-10-07 21:22:57 +0100
commit180ca444b985c42948fa26abd278e616b5ce7eb2 (patch)
tree16d38f12c42cf71c0e38aaf052701645b7b1abf0 /net/ipv6/ip6_fib.c
parent0d7b70e83642f01c451a52faa3908e7b054ff7c6 (diff)
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ipv6: introduce a new function fib6_update_sernum()
This function takes a route as input and tries to update the sernum in the fib6_node this route is associated with. It will be used in later commit when adding a cached route into the exception table under that route. Signed-off-by: Wei Wang <weiwan@google.com> Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_fib.c')
-rw-r--r--net/ipv6/ip6_fib.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index e5308d7cbd75..0ba4fbb2f855 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -110,6 +110,20 @@ enum {
FIB6_NO_SERNUM_CHANGE = 0,
};
+void fib6_update_sernum(struct rt6_info *rt)
+{
+ struct fib6_table *table = rt->rt6i_table;
+ struct net *net = dev_net(rt->dst.dev);
+ struct fib6_node *fn;
+
+ write_lock_bh(&table->tb6_lock);
+ fn = rcu_dereference_protected(rt->rt6i_node,
+ lockdep_is_held(&table->tb6_lock));
+ if (fn)
+ fn->fn_sernum = fib6_new_sernum(net);
+ write_unlock_bh(&table->tb6_lock);
+}
+
/*
* Auxiliary address test functions for the radix tree.
*