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Commit 180ca444 authored by Wei Wang's avatar Wei Wang Committed by David S. Miller
Browse files

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: default avatarWei Wang <weiwan@google.com>
Signed-off-by: default avatarMartin KaFai Lau <kafai@fb.com>
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0d7b70e8

include/net/ip6_fib.h

+2 −0
Original line number Diff line number Diff line
@@ -358,6 +358,8 @@ void __net_exit fib6_notifier_exit(struct net *net); 
unsigned int fib6_tables_seq_read(struct net *net);

int fib6_tables_dump(struct net *net, struct notifier_block *nb);



void fib6_update_sernum(struct rt6_info *rt);



#ifdef CONFIG_IPV6_MULTIPLE_TABLES

int fib6_rules_init(void);

void fib6_rules_cleanup(void);

net/ipv6/ip6_fib.c

+14 −0
Original line number Diff line number Diff line
@@ -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.

 *