[NETNS][FRAGS]: Make the nqueues counter per-namespace.

This is simple - just move the variable from struct inet_frags
to struct netns_frags and adjust the usage appropriately.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 13 insertions, 6 deletions

diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index 158c5f6..4fec0b9 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -63,7 +63,6 @@ void inet_frags_init(struct inet_frags *f)
 	f->rnd = (u32) ((num_physpages ^ (num_physpages>>7)) ^
 				   (jiffies ^ (jiffies >> 6)));
 
-	f->nqueues = 0;
 	atomic_set(&f->mem, 0);
 
 	setup_timer(&f->secret_timer, inet_frag_secret_rebuild,
@@ -73,6 +72,12 @@ void inet_frags_init(struct inet_frags *f)
 }
 EXPORT_SYMBOL(inet_frags_init);
 
+void inet_frags_init_net(struct netns_frags *nf)
+{
+	nf->nqueues = 0;
+}
+EXPORT_SYMBOL(inet_frags_init_net);
+
 void inet_frags_fini(struct inet_frags *f)
 {
 	del_timer(&f->secret_timer);
@@ -84,7 +89,7 @@ static inline void fq_unlink(struct inet_frag_queue *fq, struct inet_frags *f)
 	write_lock(&f->lock);
 	hlist_del(&fq->list);
 	list_del(&fq->lru_list);
-	f->nqueues--;
+	fq->net->nqueues--;
 	write_unlock(&f->lock);
 }
 
@@ -206,7 +211,7 @@ static struct inet_frag_queue *inet_frag_intern(struct netns_frags *nf,
 	atomic_inc(&qp->refcnt);
 	hlist_add_head(&qp->list, &f->hash[hash]);
 	list_add_tail(&qp->lru_list, &f->lru_list);
-	f->nqueues++;
+	nf->nqueues++;
 	write_unlock(&f->lock);
 	return qp;
 }
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 56211ef..cd8c830 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -95,9 +95,9 @@ static struct inet_frags_ctl ip4_frags_ctl __read_mostly = {
 
 static struct inet_frags ip4_frags;
 
-int ip_frag_nqueues(void)
+int ip_frag_nqueues(struct net *net)
 {
-	return ip4_frags.nqueues;
+	return net->ipv4.frags.nqueues;
 }
 
 int ip_frag_mem(void)
@@ -675,6 +675,8 @@ static inline int ip4_frags_ctl_register(struct net *net)
 
 static int ipv4_frags_init_net(struct net *net)
 {
+	inet_frags_init_net(&net->ipv4.frags);
+
 	return ip4_frags_ctl_register(net);
 }
 
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index cb3787f..bae3280 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -62,7 +62,7 @@ static int sockstat_seq_show(struct seq_file *seq, void *v)
 	seq_printf(seq, "UDPLITE: inuse %d\n", sock_prot_inuse_get(&udplite_prot));
 	seq_printf(seq, "RAW: inuse %d\n", sock_prot_inuse_get(&raw_prot));
 	seq_printf(seq,  "FRAG: inuse %d memory %d\n",
-			ip_frag_nqueues(), ip_frag_mem());
+			ip_frag_nqueues(&init_net), ip_frag_mem());
 	return 0;
 }