[DCCP] ackvec: Introduce dccp_ackvec_slab
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dccp/ackvec.c b/net/dccp/ackvec.c
index 3483740..6440825 100644
--- a/net/dccp/ackvec.c
+++ b/net/dccp/ackvec.c
@@ -13,10 +13,16 @@
#include "dccp.h"
#include <linux/dccp.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
#include <linux/skbuff.h>
+#include <linux/slab.h>
#include <net/sock.h>
+static kmem_cache_t *dccp_ackvec_slab;
+
int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb)
{
struct dccp_sock *dp = dccp_sk(sk);
@@ -96,7 +102,7 @@
struct dccp_ackvec *dccp_ackvec_alloc(const gfp_t priority)
{
- struct dccp_ackvec *av = kmalloc(sizeof(*av), priority);
+ struct dccp_ackvec *av = kmem_cache_alloc(dccp_ackvec_slab, priority);
if (av != NULL) {
av->dccpav_buf_head =
@@ -115,7 +121,7 @@
void dccp_ackvec_free(struct dccp_ackvec *av)
{
- kfree(av);
+ kmem_cache_free(dccp_ackvec_slab, av);
}
static inline u8 dccp_ackvec_state(const struct dccp_ackvec *av,
@@ -420,3 +426,27 @@
len, value);
return 0;
}
+
+static char dccp_ackvec_slab_msg[] __initdata =
+ KERN_CRIT "DCCP: Unable to create ack vectors slab cache\n";
+
+int __init dccp_ackvec_init(void)
+{
+ dccp_ackvec_slab = kmem_cache_create("dccp_ackvec",
+ sizeof(struct dccp_ackvec), 0,
+ SLAB_HWCACHE_ALIGN, NULL, NULL);
+ if (dccp_ackvec_slab == NULL) {
+ printk(dccp_ackvec_slab_msg);
+ return -ENOBUFS;
+ }
+
+ return 0;
+}
+
+void dccp_ackvec_exit(void)
+{
+ if (dccp_ackvec_slab != NULL) {
+ kmem_cache_destroy(dccp_ackvec_slab);
+ dccp_ackvec_slab = NULL;
+ }
+}