Commit faa041a4 authored by David Ahern's avatar David Ahern Committed by David S. Miller

ipv4: Create cleanup helper for fib_nh

Move the fib_nh cleanup code from free_fib_info_rcu into a new helper,
fib_nh_release. Move classid accounting into fib_nh_release which is
called per fib_nh to make accounting symmetrical with fib_nh_init.
Export the helper to allow for use with nexthop objects in the
future.
Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
Reviewed-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e4516ef6
......@@ -419,6 +419,7 @@ void fib_select_path(struct net *net, struct fib_result *res,
int fib_nh_init(struct net *net, struct fib_nh *fib_nh,
struct fib_config *cfg, int nh_weight,
struct netlink_ext_ack *extack);
void fib_nh_release(struct net *net, struct fib_nh *fib_nh);
/* Exported by fib_trie.c */
void fib_trie_init(void);
......
......@@ -204,18 +204,28 @@ static void rt_fibinfo_free_cpus(struct rtable __rcu * __percpu *rtp)
free_percpu(rtp);
}
void fib_nh_release(struct net *net, struct fib_nh *fib_nh)
{
#ifdef CONFIG_IP_ROUTE_CLASSID
if (fib_nh->nh_tclassid)
net->ipv4.fib_num_tclassid_users--;
#endif
if (fib_nh->nh_dev)
dev_put(fib_nh->nh_dev);
lwtstate_put(fib_nh->nh_lwtstate);
free_nh_exceptions(fib_nh);
rt_fibinfo_free_cpus(fib_nh->nh_pcpu_rth_output);
rt_fibinfo_free(&fib_nh->nh_rth_input);
}
/* Release a nexthop info record */
static void free_fib_info_rcu(struct rcu_head *head)
{
struct fib_info *fi = container_of(head, struct fib_info, rcu);
change_nexthops(fi) {
if (nexthop_nh->nh_dev)
dev_put(nexthop_nh->nh_dev);
lwtstate_put(nexthop_nh->nh_lwtstate);
free_nh_exceptions(nexthop_nh);
rt_fibinfo_free_cpus(nexthop_nh->nh_pcpu_rth_output);
rt_fibinfo_free(&nexthop_nh->nh_rth_input);
fib_nh_release(fi->fib_net, nexthop_nh);
} endfor_nexthops(fi);
ip_fib_metrics_put(fi->fib_metrics);
......@@ -230,12 +240,7 @@ void free_fib_info(struct fib_info *fi)
return;
}
fib_info_cnt--;
#ifdef CONFIG_IP_ROUTE_CLASSID
change_nexthops(fi) {
if (nexthop_nh->nh_tclassid)
fi->fib_net->ipv4.fib_num_tclassid_users--;
} endfor_nexthops(fi);
#endif
call_rcu(&fi->rcu, free_fib_info_rcu);
}
EXPORT_SYMBOL_GPL(free_fib_info);
......
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