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Commit 5a6228a0 authored by Nicolas Dichtel's avatar Nicolas Dichtel Committed by David S. Miller
Browse files

lwtunnel: change prototype of lwtunnel_state_get() 



It saves some lines and simplify a bit the code when the state is returning
by this function. It's also useful to handle a NULL entry.

To avoid too long lines, I've also renamed lwtunnel_state_get() and
lwtunnel_state_put() to lwtstate_get() and lwtstate_put().

CC: Thomas Graf <tgraf@suug.ch>
CC: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: default avatarNicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: default avatarThomas Graf <tgraf@suug.ch>
Acked-by: default avatarRoopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d9436595

include/net/lwtunnel.h

+11 −5
Original line number Diff line number Diff line
@@ -35,12 +35,16 @@ extern const struct lwtunnel_encap_ops __rcu * 
		lwtun_encaps[LWTUNNEL_ENCAP_MAX+1];



#ifdef CONFIG_LWTUNNEL

static inline void lwtunnel_state_get(struct lwtunnel_state *lws)

static inline struct lwtunnel_state *

lwtstate_get(struct lwtunnel_state *lws)

{

	if (lws)

		atomic_inc(&lws->refcnt);



	return lws;

}



static inline void lwtunnel_state_put(struct lwtunnel_state *lws)

static inline void lwtstate_put(struct lwtunnel_state *lws)

{

	if (!lws)

		return;
@@ -74,11 +78,13 @@ int lwtunnel_output6(struct sock *sk, struct sk_buff *skb); 


#else



static inline void lwtunnel_state_get(struct lwtunnel_state *lws)

static inline struct lwtunnel_state *

lwtstate_get(struct lwtunnel_state *lws)

{

	return lws;

}



static inline void lwtunnel_state_put(struct lwtunnel_state *lws)

static inline void lwtstate_put(struct lwtunnel_state *lws)

{

}

net/ipv4/fib_semantics.c

+4 −5
Original line number Diff line number Diff line
@@ -209,7 +209,7 @@ static void free_fib_info_rcu(struct rcu_head *head) 
	change_nexthops(fi) {

		if (nexthop_nh->nh_dev)

			dev_put(nexthop_nh->nh_dev);

		lwtunnel_state_put(nexthop_nh->nh_lwtstate);

		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);
@@ -514,8 +514,8 @@ static int fib_get_nhs(struct fib_info *fi, struct rtnexthop *rtnh, 
							   nla, &lwtstate);

				if (ret)

					goto errout;

				lwtunnel_state_get(lwtstate);

				nexthop_nh->nh_lwtstate = lwtstate;

				nexthop_nh->nh_lwtstate =

					lwtstate_get(lwtstate);

			}

		}
@@ -971,8 +971,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg) 
			if (err)

				goto failure;



			lwtunnel_state_get(lwtstate);

			nh->nh_lwtstate = lwtstate;

			nh->nh_lwtstate = lwtstate_get(lwtstate);

		}

		nh->nh_oif = cfg->fc_oif;

		nh->nh_gw = cfg->fc_gw;

net/ipv4/route.c

+2 −7
Original line number Diff line number Diff line
@@ -1358,7 +1358,7 @@ static void ipv4_dst_destroy(struct dst_entry *dst) 
		list_del(&rt->rt_uncached);

		spin_unlock_bh(&ul->lock);

	}

	lwtunnel_state_put(rt->rt_lwtstate);

	lwtstate_put(rt->rt_lwtstate);

}



void rt_flush_dev(struct net_device *dev)
@@ -1407,12 +1407,7 @@ static void rt_set_nexthop(struct rtable *rt, __be32 daddr, 
#ifdef CONFIG_IP_ROUTE_CLASSID

		rt->dst.tclassid = nh->nh_tclassid;

#endif

		if (nh->nh_lwtstate) {

			lwtunnel_state_get(nh->nh_lwtstate);

			rt->rt_lwtstate = nh->nh_lwtstate;

		} else {

			rt->rt_lwtstate = NULL;

		}

		rt->rt_lwtstate = lwtstate_get(nh->nh_lwtstate);

		if (unlikely(fnhe))

			cached = rt_bind_exception(rt, fnhe, daddr);

		else if (!(rt->dst.flags & DST_NOCACHE))

net/ipv6/ip6_fib.c

+1 −1
Original line number Diff line number Diff line
@@ -178,7 +178,7 @@ static void rt6_free_pcpu(struct rt6_info *non_pcpu_rt) 
static void rt6_release(struct rt6_info *rt)

{

	if (atomic_dec_and_test(&rt->rt6i_ref)) {

		lwtunnel_state_put(rt->rt6i_lwtstate);

		lwtstate_put(rt->rt6i_lwtstate);

		rt6_free_pcpu(rt);

		dst_free(&rt->dst);

	}

net/ipv6/route.c

+2 −6
Original line number Diff line number Diff line
@@ -1778,8 +1778,7 @@ int ip6_route_add(struct fib6_config *cfg) 
					   cfg->fc_encap, &lwtstate);

		if (err)

			goto out;

		lwtunnel_state_get(lwtstate);

		rt->rt6i_lwtstate = lwtstate;

		rt->rt6i_lwtstate = lwtstate_get(lwtstate);

		if (lwtunnel_output_redirect(rt->rt6i_lwtstate))

			rt->dst.output = lwtunnel_output6;

	}
@@ -2161,10 +2160,7 @@ static void ip6_rt_copy_init(struct rt6_info *rt, struct rt6_info *ort) 
#endif

	rt->rt6i_prefsrc = ort->rt6i_prefsrc;

	rt->rt6i_table = ort->rt6i_table;

	if (ort->rt6i_lwtstate) {

		lwtunnel_state_get(ort->rt6i_lwtstate);

		rt->rt6i_lwtstate = ort->rt6i_lwtstate;

	}

	rt->rt6i_lwtstate = lwtstate_get(ort->rt6i_lwtstate);

}



#ifdef CONFIG_IPV6_ROUTE_INFO