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Commit fccd7d5c authored by David S. Miller's avatar David S. Miller
Browse files

decnet: Use neighbours privately in dn_route struct. 



This allows an easy conversion away from dst_get_neighbour*().

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 13a43d94

include/net/dn_route.h

+2 −0
Original line number Diff line number Diff line
@@ -67,6 +67,8 @@ extern void dn_rt_cache_flush(int delay); 
struct dn_route {

	struct dst_entry dst;



	struct neighbour *n;



	struct flowidn fld;



	__le16 rt_saddr;

net/decnet/dn_neigh.c

+1 −1
Original line number Diff line number Diff line
@@ -202,7 +202,7 @@ static int dn_neigh_output_packet(struct sk_buff *skb) 
{

	struct dst_entry *dst = skb_dst(skb);

	struct dn_route *rt = (struct dn_route *)dst;

	struct neighbour *neigh = dst_get_neighbour_noref(dst);

	struct neighbour *neigh = rt->n;

	struct net_device *dev = neigh->dev;

	char mac_addr[ETH_ALEN];

	unsigned int seq;

net/decnet/dn_route.c

+29 −7
Original line number Diff line number Diff line
@@ -114,6 +114,7 @@ static struct dst_entry *dn_dst_check(struct dst_entry *, __u32); 
static unsigned int dn_dst_default_advmss(const struct dst_entry *dst);

static unsigned int dn_dst_mtu(const struct dst_entry *dst);

static void dn_dst_destroy(struct dst_entry *);

static void dn_dst_ifdown(struct dst_entry *, struct net_device *dev, int how);

static struct dst_entry *dn_dst_negative_advice(struct dst_entry *);

static void dn_dst_link_failure(struct sk_buff *);

static void dn_dst_update_pmtu(struct dst_entry *dst, u32 mtu);
@@ -140,6 +141,7 @@ static struct dst_ops dn_dst_ops = { 
	.mtu =			dn_dst_mtu,

	.cow_metrics =		dst_cow_metrics_generic,

	.destroy =		dn_dst_destroy,

	.ifdown =		dn_dst_ifdown,

	.negative_advice =	dn_dst_negative_advice,

	.link_failure =		dn_dst_link_failure,

	.update_pmtu =		dn_dst_update_pmtu,
@@ -148,9 +150,27 @@ static struct dst_ops dn_dst_ops = { 


static void dn_dst_destroy(struct dst_entry *dst)

{

	struct dn_route *rt = (struct dn_route *) dst;



	if (rt->n)

		neigh_release(rt->n);

	dst_destroy_metrics_generic(dst);

}



static void dn_dst_ifdown(struct dst_entry *dst, struct net_device *dev, int how)

{

	if (how) {

		struct dn_route *rt = (struct dn_route *) dst;

		struct neighbour *n = rt->n;



		if (n && n->dev == dev) {

			n->dev = dev_net(dev)->loopback_dev;

			dev_hold(n->dev);

			dev_put(dev);

		}

	}

}



static __inline__ unsigned int dn_hash(__le16 src, __le16 dst)

{

	__u16 tmp = (__u16 __force)(src ^ dst);
@@ -246,7 +266,8 @@ static int dn_dst_gc(struct dst_ops *ops) 
 */

static void dn_dst_update_pmtu(struct dst_entry *dst, u32 mtu)

{

	struct neighbour *n = dst_get_neighbour_noref(dst);

	struct dn_route *rt = (struct dn_route *) dst;

	struct neighbour *n = rt->n;

	u32 min_mtu = 230;

	struct dn_dev *dn;
@@ -715,7 +736,8 @@ out: 
static int dn_to_neigh_output(struct sk_buff *skb)

{

	struct dst_entry *dst = skb_dst(skb);

	struct neighbour *n = dst_get_neighbour_noref(dst);

	struct dn_route *rt = (struct dn_route *) dst;

	struct neighbour *n = rt->n;



	return n->output(n, skb);

}
@@ -729,7 +751,7 @@ static int dn_output(struct sk_buff *skb) 


	int err = -EINVAL;



	if (dst_get_neighbour_noref(dst) == NULL)

	if (rt->n == NULL)

		goto error;



	skb->dev = dev;
@@ -852,11 +874,11 @@ static int dn_rt_set_next_hop(struct dn_route *rt, struct dn_fib_res *res) 
	}

	rt->rt_type = res->type;



	if (dev != NULL && dst_get_neighbour_noref(&rt->dst) == NULL) {

	if (dev != NULL && rt->n == NULL) {

		n = __neigh_lookup_errno(&dn_neigh_table, &rt->rt_gateway, dev);

		if (IS_ERR(n))

			return PTR_ERR(n);

		dst_set_neighbour(&rt->dst, n);

		rt->n = n;

	}



	if (dst_metric(&rt->dst, RTAX_MTU) > rt->dst.dev->mtu)
@@ -1163,7 +1185,7 @@ make_route: 
	rt->rt_dst_map    = fld.daddr;

	rt->rt_src_map    = fld.saddr;



	dst_set_neighbour(&rt->dst, neigh);

	rt->n = neigh;

	neigh = NULL;



	rt->dst.lastuse = jiffies;
@@ -1433,7 +1455,7 @@ make_route: 
	rt->fld.flowidn_iif  = in_dev->ifindex;

	rt->fld.flowidn_mark = fld.flowidn_mark;



	dst_set_neighbour(&rt->dst, neigh);

	rt->n = neigh;

	rt->dst.lastuse = jiffies;

	rt->dst.output = dn_rt_bug;

	switch (res.type) {