[INET]: Consolidate the xxx_evictor
The evictors collect some statistics for ipv4 and ipv6,
so make it return the number of evicted queues and account
them all at once in the caller.
The XXX_ADD_STATS_BH() macros are just for this case,
but maybe there are places in code, that can make use of
them as well.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index 785f5cd..e4fbe5b 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -163,34 +163,7 @@
static void nf_ct_frag6_evictor(void)
{
- struct nf_ct_frag6_queue *fq;
- struct list_head *tmp;
- unsigned int work;
-
- work = atomic_read(&nf_frags.mem);
- if (work <= nf_frags_ctl.low_thresh)
- return;
-
- work -= nf_frags_ctl.low_thresh;
- while (work > 0) {
- read_lock(&nf_frags.lock);
- if (list_empty(&nf_frags.lru_list)) {
- read_unlock(&nf_frags.lock);
- return;
- }
- tmp = nf_frags.lru_list.next;
- BUG_ON(tmp == NULL);
- fq = list_entry(tmp, struct nf_ct_frag6_queue, q.lru_list);
- atomic_inc(&fq->q.refcnt);
- read_unlock(&nf_frags.lock);
-
- spin_lock(&fq->q.lock);
- if (!(fq->q.last_in&COMPLETE))
- fq_kill(fq);
- spin_unlock(&fq->q.lock);
-
- fq_put(fq, &work);
- }
+ inet_frag_evictor(&nf_frags);
}
static void nf_ct_frag6_expire(unsigned long data)
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 940b7d2..02e4e85 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -185,33 +185,11 @@
static void ip6_evictor(struct inet6_dev *idev)
{
- struct frag_queue *fq;
- struct list_head *tmp;
- int work;
+ int evicted;
- work = atomic_read(&ip6_frags.mem) - ip6_frags_ctl.low_thresh;
- if (work <= 0)
- return;
-
- while(work > 0) {
- read_lock(&ip6_frags.lock);
- if (list_empty(&ip6_frags.lru_list)) {
- read_unlock(&ip6_frags.lock);
- return;
- }
- tmp = ip6_frags.lru_list.next;
- fq = list_entry(tmp, struct frag_queue, q.lru_list);
- atomic_inc(&fq->q.refcnt);
- read_unlock(&ip6_frags.lock);
-
- spin_lock(&fq->q.lock);
- if (!(fq->q.last_in&COMPLETE))
- fq_kill(fq);
- spin_unlock(&fq->q.lock);
-
- fq_put(fq, &work);
- IP6_INC_STATS_BH(idev, IPSTATS_MIB_REASMFAILS);
- }
+ evicted = inet_frag_evictor(&ip6_frags);
+ if (evicted)
+ IP6_ADD_STATS_BH(idev, IPSTATS_MIB_REASMFAILS, evicted);
}
static void ip6_frag_expire(unsigned long data)