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decnet: Move dn_next into decnet route structure.

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Signed-off-by: David S. Miller <davem@davemloft.net>
Reviewed-by: Eric Dumazet <edumazet@google.com>
This commit is contained in:
David Miller 2017-11-28 15:40:08 -05:00 committed by David S. Miller
parent ca2c374a5c
commit fe736e778c
3 changed files with 19 additions and 17 deletions
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1
include/net/dn_route.h
View File

@ -69,6 +69,7 @@ int dn_route_rcv(struct sk_buff *skb, struct net_device *dev,
*/
struct dn_route {
struct dst_entry dst;
struct dn_route __rcu *dn_next;
struct neighbour *n;

1
include/net/dst.h
View File

@ -102,7 +102,6 @@ struct dst_entry {
union {
struct dst_entry *next;
struct rt6_info __rcu *rt6_next;
struct dn_route __rcu *dn_next;
};
};

34
net/decnet/dn_route.c
View File

@ -199,11 +199,11 @@ static void dn_dst_check_expire(struct timer_list *unused)
lockdep_is_held(&dn_rt_hash_table[i].lock))) != NULL) {
if (atomic_read(&rt->dst.__refcnt) > 1 ||
(now - rt->dst.lastuse) < expire) {
rtp = &rt->dst.dn_next;
rtp = &rt->dn_next;
continue;
}
*rtp = rt->dst.dn_next;
rt->dst.dn_next = NULL;
*rtp = rt->dn_next;
rt->dn_next = NULL;
dst_dev_put(&rt->dst);
dst_release(&rt->dst);
}
@ -233,11 +233,11 @@ static int dn_dst_gc(struct dst_ops *ops)
lockdep_is_held(&dn_rt_hash_table[i].lock))) != NULL) {
if (atomic_read(&rt->dst.__refcnt) > 1 ||
(now - rt->dst.lastuse) < expire) {
rtp = &rt->dst.dn_next;
rtp = &rt->dn_next;
continue;
}
*rtp = rt->dst.dn_next;
rt->dst.dn_next = NULL;
*rtp = rt->dn_next;
rt->dn_next = NULL;
dst_dev_put(&rt->dst);
dst_release(&rt->dst);
break;
@ -333,8 +333,8 @@ static int dn_insert_route(struct dn_route *rt, unsigned int hash, struct dn_rou
lockdep_is_held(&dn_rt_hash_table[hash].lock))) != NULL) {
if (compare_keys(&rth->fld, &rt->fld)) {
/* Put it first */
*rthp = rth->dst.dn_next;
rcu_assign_pointer(rth->dst.dn_next,
*rthp = rth->dn_next;
rcu_assign_pointer(rth->dn_next,
dn_rt_hash_table[hash].chain);
rcu_assign_pointer(dn_rt_hash_table[hash].chain, rth);
@ -345,10 +345,10 @@ static int dn_insert_route(struct dn_route *rt, unsigned int hash, struct dn_rou
*rp = rth;
return 0;
}
rthp = &rth->dst.dn_next;
rthp = &rth->dn_next;
}
rcu_assign_pointer(rt->dst.dn_next, dn_rt_hash_table[hash].chain);
rcu_assign_pointer(rt->dn_next, dn_rt_hash_table[hash].chain);
rcu_assign_pointer(dn_rt_hash_table[hash].chain, rt);
dst_hold_and_use(&rt->dst, now);
@ -369,8 +369,8 @@ static void dn_run_flush(struct timer_list *unused)
goto nothing_to_declare;
for(; rt; rt = next) {
next = rcu_dereference_raw(rt->dst.dn_next);
RCU_INIT_POINTER(rt->dst.dn_next, NULL);
next = rcu_dereference_raw(rt->dn_next);
RCU_INIT_POINTER(rt->dn_next, NULL);
dst_dev_put(&rt->dst);
dst_release(&rt->dst);
}
@ -1183,6 +1183,7 @@ static int dn_route_output_slow(struct dst_entry **pprt, const struct flowidn *o
if (rt == NULL)
goto e_nobufs;
rt->dn_next = NULL;
memset(&rt->fld, 0, sizeof(rt->fld));
rt->fld.saddr = oldflp->saddr;
rt->fld.daddr = oldflp->daddr;
@ -1252,7 +1253,7 @@ static int __dn_route_output_key(struct dst_entry **pprt, const struct flowidn *
if (!(flags & MSG_TRYHARD)) {
rcu_read_lock_bh();
for (rt = rcu_dereference_bh(dn_rt_hash_table[hash].chain); rt;
rt = rcu_dereference_bh(rt->dst.dn_next)) {
rt = rcu_dereference_bh(rt->dn_next)) {
if ((flp->daddr == rt->fld.daddr) &&
(flp->saddr == rt->fld.saddr) &&
(flp->flowidn_mark == rt->fld.flowidn_mark) &&
@ -1448,6 +1449,7 @@ static int dn_route_input_slow(struct sk_buff *skb)
if (rt == NULL)
goto e_nobufs;
rt->dn_next = NULL;
memset(&rt->fld, 0, sizeof(rt->fld));
rt->rt_saddr = fld.saddr;
rt->rt_daddr = fld.daddr;
@ -1529,7 +1531,7 @@ static int dn_route_input(struct sk_buff *skb)
rcu_read_lock();
for(rt = rcu_dereference(dn_rt_hash_table[hash].chain); rt != NULL;
rt = rcu_dereference(rt->dst.dn_next)) {
rt = rcu_dereference(rt->dn_next)) {
if ((rt->fld.saddr == cb->src) &&
(rt->fld.daddr == cb->dst) &&
(rt->fld.flowidn_oif == 0) &&
@ -1749,7 +1751,7 @@ int dn_cache_dump(struct sk_buff *skb, struct netlink_callback *cb)
rcu_read_lock_bh();
for(rt = rcu_dereference_bh(dn_rt_hash_table[h].chain), idx = 0;
rt;
rt = rcu_dereference_bh(rt->dst.dn_next), idx++) {
rt = rcu_dereference_bh(rt->dn_next), idx++) {
if (idx < s_idx)
continue;
skb_dst_set(skb, dst_clone(&rt->dst));
@ -1795,7 +1797,7 @@ static struct dn_route *dn_rt_cache_get_next(struct seq_file *seq, struct dn_rou
{
struct dn_rt_cache_iter_state *s = seq->private;
rt = rcu_dereference_bh(rt->dst.dn_next);
rt = rcu_dereference_bh(rt->dn_next);
while (!rt) {
rcu_read_unlock_bh();
if (--s->bucket < 0)