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authorNikolay Aleksandrov <nikolay@redhat.com>2014-08-01 12:29:48 +0200
committerDavid S. Miller <davem@davemloft.net>2014-08-02 15:31:31 -0700
commitd4ad4d22e7ac6b8711b35d7e86eb29f03f8ac153 (patch)
tree929ebb9bc76b52037572bfb58475112989b51ba0 /net/ipv4
parent2e404f632f44979ddf0ce0808a438249a72d7015 (diff)
downloadlinux-d4ad4d22e7ac6b8711b35d7e86eb29f03f8ac153.tar.bz2
inet: frags: use kmem_cache for inet_frag_queue
Use kmem_cache to allocate/free inet_frag_queue objects since they're all the same size per inet_frags user and are alloced/freed in high volumes thus making it a perfect case for kmem_cache. Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com> Acked-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/inet_fragment.c13
-rw-r--r--net/ipv4/ip_fragment.c5
2 files changed, 14 insertions, 4 deletions
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index 4baa76c60398..9eb89f3f0ee4 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -198,7 +198,7 @@ static void inet_frag_schedule_worker(struct inet_frags *f)
schedule_work(&f->frags_work);
}
-void inet_frags_init(struct inet_frags *f)
+int inet_frags_init(struct inet_frags *f)
{
int i;
@@ -213,6 +213,12 @@ void inet_frags_init(struct inet_frags *f)
seqlock_init(&f->rnd_seqlock);
f->last_rebuild_jiffies = 0;
+ f->frags_cachep = kmem_cache_create(f->frags_cache_name, f->qsize, 0, 0,
+ NULL);
+ if (!f->frags_cachep)
+ return -ENOMEM;
+
+ return 0;
}
EXPORT_SYMBOL(inet_frags_init);
@@ -225,6 +231,7 @@ EXPORT_SYMBOL(inet_frags_init_net);
void inet_frags_fini(struct inet_frags *f)
{
cancel_work_sync(&f->frags_work);
+ kmem_cache_destroy(f->frags_cachep);
}
EXPORT_SYMBOL(inet_frags_fini);
@@ -327,7 +334,7 @@ void inet_frag_destroy(struct inet_frag_queue *q, struct inet_frags *f)
if (f->destructor)
f->destructor(q);
- kfree(q);
+ kmem_cache_free(f->frags_cachep, q);
}
EXPORT_SYMBOL(inet_frag_destroy);
@@ -377,7 +384,7 @@ static struct inet_frag_queue *inet_frag_alloc(struct netns_frags *nf,
return NULL;
}
- q = kzalloc(f->qsize, GFP_ATOMIC);
+ q = kmem_cache_zalloc(f->frags_cachep, GFP_ATOMIC);
if (q == NULL)
return NULL;
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index cb56bcc1eee2..15f0e2bad7ad 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -55,6 +55,7 @@
*/
static int sysctl_ipfrag_max_dist __read_mostly = 64;
+static const char ip_frag_cache_name[] = "ip4-frags";
struct ipfrag_skb_cb
{
@@ -860,5 +861,7 @@ void __init ipfrag_init(void)
ip4_frags.qsize = sizeof(struct ipq);
ip4_frags.match = ip4_frag_match;
ip4_frags.frag_expire = ip_expire;
- inet_frags_init(&ip4_frags);
+ ip4_frags.frags_cache_name = ip_frag_cache_name;
+ if (inet_frags_init(&ip4_frags))
+ panic("IP: failed to allocate ip4_frags cache\n");
}